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Netgear DG834 ADSL White router

1. 3 LOG IN TO THE DG834 Note Your computer needs to be configured for DHCP For instructions on configuring for DHCP please see Appendix C Preparing Your Network Connect to the router by typing ittp 192 168 0 in the address field of Internet Explorer or Netscape Navigator Figure 3 7 Connect to the router a A login window opens as shown below Enter Network Password E 21x gt Please type your user name and password Site 192 168 0 1 Realm User Name ann Password I Save this password in your password list Cancel Figure 3 8 Login window b When prompted enter admin for the user name and password for the password both in lower case letters After logging in you will see the menu below 3 8 Connecting the Router to the Internet Reference Manual for the Model DG834 ADSL Firewall Router poner Setup Wizard Select Country and Language Country US fd Language English Auto Detect Connection Type This Setup Wizard can Detect the type of Internet Connection you have Do You Want The Smart Setup Wizard To Try And Detect The Connection Type Now Yes C No WantTo Configure The Gateway Myself Next Figure 3 9 Setup Wizard 4 CONNECT TO THE INTERNET The router is now properly attached to your network You are now ready to configure your router to connect to the Internet There are two ways you can configure your router to connect to the Int
2. Flash erasable programmable read only memory EPROM for firmware upgrade What s in the Box The product package should contain the following items DG834 ADSL Firewall Router AC power adapter varies by region Category 5 Cat 5 Ethernet cable Telephone cable Microfilters quantity and type vary by region ADSL Firewall Router Resource CD including This guide Application Notes A Printed Quick Installation Guide Warranty and Support Information Cards If any of the parts are incorrect missing or damaged contact your NETGEAR dealer Keep the carton including the original packing materials in case you need to return the product for repair Introduction 2 5 Reference Manual for the Model DG834 ADSL Firewall Router The Router s Front Panel The DG834 ADSL Firewall Router front panel shown below contains status LEDs NETGEAR I v d 4 Power Test Internet LAN Figure 2 1 DG834 Front Panel You can use the LEDs to verify various conditions Table 2 1 lists and describes each LED on the front panel of the router These LEDs are green when lit Table 2 1 LED Descriptions Label Activity Description Power On Power is supplied to the router Off Power is not supplied to the router Test On The system is initializing Off The system is ready and running Internet Blink Amber Indicates ADSL training On Green The Internet port has detected a link wit
3. start finish WAN Users Back Cancel Figure 4 7 Rule example Blocking Instant Messenger The parameters are e Service From this list select the application or service to be allowed or blocked The list already displays many common services but you are not limited to these choices Use the Add Custom Service feature to add any additional services or applications that do not already appear e Action Choose how you want this type of traffic to be handled You can block or allow always or you can choose to block or allow according to the schedule you have defined in the Schedule menu 4 10 Protecting Your Network Reference Manual for the Model DG834 ADSL Firewall Router e LAN Users These settings determine which packets are covered by the rule based on their source LAN IP address Select the desired option e Any all IP addresses are covered by this rule e Address range if this option is selected you must enter the Start and Finish fields e Single address enter the required address in the Start fields e WAN Users These settings determine which packets are covered by the rule based on their destination WAN IP address Select the desired option e Any all IP addresses are covered by this rule e Address range if this option is selected you must enter the Start and Finish fields e Single address enter the required address in the Start fields e Lo You can select whether the tra
4. Ad hoc Mode ADSL Asymmetric Digital Subscriber Line Glossary IEEE 802 3 specification for 10 Mbps Ethernet over twisted pair wiring IEEE 802 3 specification for 100 Mbps Ethernet over twisted pair wiring IEEE specification for wireless networking at 11 Mbps using direct sequence spread spectrum DSSS technology and operating in the unlicensed radio spectrum at 2 5GHz IEEE specification for wireless networking at 54 Mbps using direct sequence spread spectrum DSSS technology and operating in the unlicensed radio spectrum at 2 5GHz 802 1x defines port based network access control used to provide authenticated network access and automated data encryption key management The IEEE 802 1x draft standard offers an effective framework for authenticating and controlling user traffic to a protected network as well as dynamically varying encryption keys 802 1x uses a protocol called EAP Extensible Authentication Protocol and supports multiple authentication methods such as token cards Kerberos one time passwords certificates and public key authentication For details on EAP specifically refer to IETF s RFC 2284 An ACL is a database that an Operating System uses to track each user s access rights to system objects such as file directories and or files An 802 11 networking framework in which devices or stations communicate directly with each other without the use of an access point AP Ad hoc mode is also referred
5. Reference Manual for the Model DG834 ADSL Firewall Router NETGEAR NETGEAR Inc 4500 Great America Parkway Santa Clara CA 95054 USA Phone 1 888 NETGEAR SM DG834V2NA 1 May 2004 2004 by NETGEAR Inc All rights reserved May 2004 Trademarks NETGEAR is a trademark of Netgear Inc Microsoft Windows and Windows NT are registered trademarks of Microsoft Corporation Other brand and product names are registered trademarks or trademarks of their respective holders Statement of Conditions In the interest of improving internal design operational function and or reliability NETGEAR reserves the right to make changes to the products described in this document without notice NETGEAR does not assume any liability that may occur due to the use or application of the product s or circuit layout s described herein Federal Communications Commission FCC Compliance Notice Radio Frequency Notice This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation
6. link at the top right of any page in the chapter you want to print A new browser window opens showing the PDF version of the chapter you were viewing Click the print icon in the upper left of the window Tip If your printer supports printing two pages on a single sheet of paper you can save paper an printer ink by selecting this feature e Printing the Full Manual Use the PDF button in the toolbar at the top right of the browser window Click PDF button A new browser window opens showing the PDF version of the chapter you were viewing Click the print icon in the upper left of the window Tip If your printer supports printing two pages on a single sheet of paper you can save paper an printer ink by selecting this feature About This Guide 1 3 Reference Manual for the Model DG834 ADSL Firewall Router 1 4 About This Guide Chapter 2 Introduction This chapter describes the features of the NETGEAR DG834 ADSL Firewall Router The DG834 ADSL router is a combination of a built in ADSL modem router 4 port switch and firewall which enables your entire network to safely share an Internet connection that otherwise is used by a single computer Note If you are unfamiliar with networking and routing refer to Appendix B Network and Routing Basics to become more familiar with the terms and procedures used in this manual gt About the Router The DG834 ADSL Firewall Router
7. If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help Federal Communications Commission FCC Radiation Exposure Statement This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment In order to avoid the possibility of exceeding the FCC radio frequency exposure limits human proximity to the antenna shall not be less than 20 cm 8 inches during normal operation EN 55 022 Declaration of Conformance This is to certify that the DG834 ADSL Firewall Router is shielded against the generation of radio interference in accordance with the application of Council Directive 89 336 EEC Article 4a Conformity is declared by the application of EN 55 022 Class B CISPR 22 Bestatigung des Herstellers Importeurs Es wird hiermit best tigt da das DG834 ADSL Firewall Router gem der im BMPT AmtsblVfg 243 1991 und Vfg 46 1992 aufgef hrten Bestimmungen entstort ist Das vorschriftsma ige Betreiben einiger Ger te z B Testsender kann je
8. Usually written in dotted decimal notation with periods separating the bytes for example 134 177 244 57 Internet Protocol Security IPSec is a series of guidelines for securing private information transmitted over public networks IPSec is a VPN method providing a higher level of security than PPTP Internet service provider The main internetworking protocol used in the Internet Used in conjunction with the Transfer Control Protocol TCP to form TCP IP See local area network LAN A communications network serving users within a limited area such as one floor of a building A LAN typically connects multiple personal computers and shared network devices such as storage and printers Although many technologies exist to implement a LAN Ethernet is the most common for connecting personal computers Media Access Control address A unique 48 bit hardware address assigned to every Ethernet node Usually written in the form 01 23 45 67 89 ab Megabits per second In cable wiring the concept of transmit and receive are from the perspective of the computer which is wired as a Media Dependant Interface MDI In MDI wiring a computer transmits on pins and 2 At the hub switch router or access point the perspective is reversed and the hub receives on pins 1 and 2 This wiring is referred to as Media Dependant Interface Crossover MDI X See Most Significant Bit or Most Significant Byte See Maximum Transmission Unit Th
9. normal connection such as to a computer or an uplink connection such as to a switch or hub That port will then configure itself to the correct configuration This feature also eliminates the need to worry about crossover cables as Auto Uplink will accommodate either type of cable to make the right connection Protocol Support The DG834 supports Transmission Control Protocol Internet Protocol TCP IP and Routing Information Protocol RIP Appendix B Network and Routing Basics provides further information on TCP IP e The Ability to Enable or Disable IP Address Sharing by NAT The DG834 allows several networked PCs to share an Internet account using only a single IP address which may be statically or dynamically assigned by your Internet service provider ISP This technique known as Network Address Translation NAT allows the use of an inexpensive single user ISP account This feature can also be turned off completely for using the DG834 if you want to manage the IP address scheme yourself e Automatic Configuration of Attached PCs by DHCP The DG834 dynamically assigns network configuration information including IP router and domain name server DNS addresses to attached PCs on the LAN using the Dynamic Host Configuration Protocol DHCP This feature greatly simplifies configuration of PCs on your local network e DNS Proxy When DHCP is enabled and no DNS addresses are specified the router provides its own address
10. 0 x 3 Type the MAC Address of the computer or server Tip If the computer is already present on your network you can copy its MAC address from the Attached Devices menu and paste it here 4 Click Apply to enter the reserved address into the table Note The reserved address will not be assigned until the next time the computer contacts the router s DHCP server Reboot the computer or access its IP configuration and force a DHCP release and renew To edit or delete a reserved address entry 1 Click the button next to the reserved address you want to edit or delete 2 Click Edit or Delete How to Configure LAN TCP IP Settings 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever User Name Password and LAN address you have chosen for the router 6 6 Advanced Configuration Reference Manual for the Model DG834 ADSL Firewall Router 2 From the Main Menu under Advanced click the LAN IP Setup link to view the menu shown in Figure 6 3 LAN IP Setup LAN TCPAP Setup IP Address 192 168 0 a IP Subnet Mask 255 J255 255 0 RIP Direction None RIP Version Disable Use Router as DHCP Server Starting IP Address 192 168 0 12 Ending IP Address 192 168 0 254 Address Reservation IP Address Device Name MAC Address Apply Cancel Figure 6 3 LAN IP Setup Menu
11. IP Properties on page C 6 Troubleshooting a TCP IP Network Using the Ping Utility Most TCP IP terminal devices and routers contain a ping utility that sends an echo request packet to the designated device The device then responds with an echo reply Troubleshooting a TCP IP network is made very easy by using the ping utility in your computer Testing the LAN Path to Your Router You can ping the router from your computer to verify that the LAN path to your router is set up correctly To ping the router from a PC running Windows 95 or later 1 2 From the Windows toolbar click the Start button and select Run In the field provided type Ping followed by the IP address of the router as in this example ping 192 168 0 1 Click OK You should see a message like this one Pinging lt IP address gt with 32 bytes of data If the path is working you see this message Reply from lt IP address gt bytes 32 time NN ms TTL xxx If the path is not working you see this message Request timed out If the path is not functioning correctly you could have one of the following problems Troubleshooting 7 7 Reference Manual for the Model DG834 ADSL Firewall Router Wrong physical connections Make sure the LAN port LED is on If the LED is off follow the instructions in LAN or WAN Port LEDs Not On on page 7 2 Check that the corresponding Link LEDs are on for your network interface card and for the hu
12. IP address that your ISP assigned Also enter the IP Subnet Mask and the Gateway IP Address The gateway is the ISP s router to which your router will connect e Select IP Over ATM IPoA if your ISP uses Classical IP Addresses RFC1577 Enter the IP address IP Subnet Mask and Gateway IP Addresses that your ISP assigned Domain Name Server DNS Address e Select Get Dynamically from ISP if your ISP uses DHCP to assign your IP address Your ISP will automatically assign this address e Ifyou know that your ISP does not automatically transmit DNS addresses to the router during login select Use these DNS servers and enter the IP address of your ISP s Primary DNS Server If a Secondary DNS Server address is available enter it also 3 18 Connecting the Router to the Internet Reference Manual for the Model DG834 ADSL Firewall Router A DNS server is a host on the Internet that translates Internet names such as www netgear com to numeric IP addresses Typically your ISP transfers the IP address of one or two DNS servers to your router during login If the ISP does not transfer an address you must obtain it from the ISP and enter it manually here 5 You should only disable NAT if you are sure you do not require it NAT automatically assigns private IP addresses 192 168 0 x to LAN connected devices When NAT is disabled only standard routing is performed by this router Classical routing lets you directly m
13. It recognizes both formats when receiving By default this is set for RIP 1 RIP 1 is universally supported RIP 1 is probably adequate for most networks unless you have an unusual network setup RIP 2 carries more information Both RIP 2B and RIP 2M send the routing data in RIP 2 format RIP 2B uses subnet broadcasting RIP 2M uses multicasting Note If you change the LAN IP address of the router while connected through the browser you will be disconnected You must then open a new connection to the new IP address and log in again gt DHCP By default the router will function as a DHCP Dynamic Host Configuration Protocol server allowing it to assign IP DNS server and default gateway addresses to all computers connected to the router s LAN The assigned default gateway address is the LAN address of the router IP addresses will be assigned to the attached PCs from a pool of addresses specified in this menu Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN For most applications the default DHCP and TCP IP settings of the router are satisfactory See IP Configuration by DHCP on page B 10 for an explanation of DHCP and information about how to assign IP addresses for your network Use Router as DHCP server If another device on your network will be the DHCP server or if you will manually configure the network settings of all of your computers clear
14. Reboot Figure 5 9 Diagnostics menu Enabling Remote Management Using the Remote Management page you can allow a user or users on the Internet to configure upgrade and check the status of your DG834 ADSL Firewall Router 5 14 Managing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Note Be sure to change the router s default password to a very secure password The gt ideal password should contain no dictionary words from any language and should be a mixture of letters both upper and lower case numbers and symbols Your password can be up to 30 characters Configuring Remote Management 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever User Name Password and LAN address you have chosen for the router From the Advanced section of the main menu select the Remote Management link Select the Turn Remote Management On check box Specify what external addresses will be allowed to access the router s remote management For security restrict access to as few external IP addresses as practical a To allow access from any IP address on the Internet select Everyone b To allow access from a range of IP addresses on the Internet select IP address range Enter a beginning and ending IP address to define the allowed range c To allow access from a single IP address o
15. Select your Time Zone This setting will be used for the blocking schedule according to your local time zone and for time stamping log entries Select the Adjust for daylight savings time box if your time zone is currently in daylight savings time 4 14 Protecting Your Network Reference Manual for the Model DG834 ADSL Firewall Router Note If your region uses Daylight Savings Time you must manually select Adjust for Daylight Savings Time on the first day of Daylight Savings Time and clear it at the end Enabling Daylight Savings Time will cause one hour to be added to the standard time 4 The router has a list of NETGEAR NTP servers If you would prefer to use a particular NTP server as the primary server enter its IP address under Use this NTP Server 5 Click Apply to save your settings How to Schedule Firewall Services If you enabled services blocking in the Block Services menu or Port forwarding in the Ports menu you can set up a schedule for when blocking occurs or when access is not restricted 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever Password and LAN address you have chosen for the router 2 Select the Schedule link of the Security menu to display menu shown above in the Schedule Services menu 3 To block Internet services based on a schedule select Every Day or select one or more days If you wa
16. Settings from the Start Menu and then select Control Panel This will display Control Panel window Network 2 x Identification Services Protocols Adapters Bindings i Windows uses the following information to identify your computer on the network You may change the name for s Double click the Network icon in the this computer and the workgroup or domain that it will s appear in Control Panel window Computer Name DOCBERTNT The Network panel will display Workgroup emoa e Select the Protocols tab to continue Preparing Your Network C 13 Reference Manual for the Model DG834 ADSL Firewall Router e Highlight the TCP IP Protocol in the Network Protocols box and click on the Properties button Network 2 x Identification Services Protocols Adapters Bindings Network Protocols FTCPAP Protocol Add Description Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Microsoft TCP IP Properties BE IP Address DNS WINS Address Routing An IP address can be automatically assigned to this network card 7 by a DHCP ale etwork does not h DHCP k The TCP IP Properties dialog box now ak wei santas et an pattie es Gare displays the space below e Click the IP Address tab e Select the radio button marked Obtain an IP address from a DHCP server Obtain an IP address fro
17. The TCP IP Control Panel opens which displays a list of configuration settings If the Configure setting is Using DHCP Server your account uses a dynamically assigned IP address In this case close the Control Panel and skip the rest of this section If an IP address and subnet mask are shown write down the information If an IP address appears under Router address write down the address This is the ISP s gateway address If any Name Server addresses are shown write down the addresses These are your ISP s DNS addresses If any information appears in the Search domains information box write it down Change the Configure setting to Using DHCP Server Close the TCP IP Control Panel C 20 Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Restarting the Network Once you have set up your computers to work with the router you must reset the network for the devices to be able to communicate correctly Restart any computer that is connected to the firewall After configuring all of your computers for TCP IP networking and restarting them and connecting them to the local network of your DG834 ADSL router you are ready to access and configure the router Preparing Your Network C 21 Reference Manual for the Model DG834 ADSL Firewall Router C 22 Preparing Your Network 10BASE T 100BASE Tx 802 11b 802 119 802 11x Access Control List ACL
18. account uses a login protocol such as PPP over Ethernet PPPoE you will be directed to the PPPoE page shown in Figure 3 10 PPPoE Login Password Apply Cancel Test Figure 3 10 Setup Wizard menu for PPPoE login accounts Enter the PPPoE login user name and password Wizard Detected PPPoA Login Account Setup If the Setup Wizard determines that your Internet service account uses a login protocol such as PPP over ATM PPPoA you will be directed to the PPPoA page shown in Figure 3 10 below PPPoA Login Password Apply Cancel Test Figure 3 11 Setup Wizard menu for PPPoA login accounts Enter your login user name and password These fields are case sensitive Connecting the Router to the Internet 3 11 Reference Manual for the Model DG834 ADSL Firewall Router Wizard Detected Dynamic IP Account Setup If the Setup Wizard determines that your Internet service account uses Dynamic IP assignment you will be directed to the page shown in Figure 3 12 below Dynamic IP Address No input data is required Click Apply to accept this connection method Cancel Test Figure 3 12 Setup Wizard menu for Dynamic IP address Click Apply to set Dynamic IP as the connection method Wizard Detected IP Over ATM Account Setup If the Setup Wizard determines that your Internet service account uses IP Over ATM Classical IP assignment RFC1577 you will be directed t
19. allow access based on the service or application source or destination IP addresses and time of day You can also choose to log traffic that matches or does not match the rule you have defined You can change the order of precedence of rules so that the rule that applies most often will take effect first See Order of Precedence for Rules on page 4 12 for more details To access the rules configuration of the DG834 click the Firewall Rules link on the main menu then click Add for either an Outbound or Inbound Service Firewall Rules Outbound Services Enable Service Name Action LAN Users WAN Servers Log Default Yes Any ALLOW always Any Any Never Add Edit Move Delete Inbound Services Enable Service Name Action LAN Server IP address WAN Users Log Default Yes Any BLOCK always Any Match Add Edit Move Delete Figure 4 4 Rules menu Protecting Your Network 4 5 Reference Manual for the Model DG834 ADSL Firewall Router e To edit an existing rule select its button on the left side of the table and click Edit e To delete an existing rule select its button on the left side of the table and click Delete e To move an existing rule to a different position in the table select its button on the left side of the table and click Move At the script prompt enter the number of the desired new position and click OK Inbound Rules Port Forwarding Because the DG834
20. an always on connection by simulating a dial up connection Point to Point Tunneling Protocol A method for establishing a virtual private network VPN by embedding Microsoft s network protocol into Internet packets Public Switched Telephone Network PPP A protocol allowing a computer using TCP IP to connect directly to the Internet Short for Remote Authentication Dial In User Service RADIUS is an authentication system Using RADIUS you must enter your user name and password before gaining access to a network This information is passed to a RADIUS server which checks that the information is correct and then authorizes access Though not an official standard the RADIUS specification is maintained by a working group of the IETF Request For Comment Refers to documents published by the Internet Engineering Task Force IETF proposing standard protocols and procedures for the Internet RFCs can be found at www ietf org See Routing Information Protocol Glossary Reference Manual for the Model DG834 ADSL Firewall Router router Routing Information Protocol SSID subnet mask Universal Plug and Play UTP vCI vPI WAN WEP wide area network Wi Fi A device that forwards data between networks An IP router forwards data based on IP source and destination addresses A protocol in which routers periodically exchange information with one another so that they can determine minimum distance paths
21. as a DNS server to the attached PCs The router obtains actual DNS addresses from the ISP during connection setup and forwards DNS requests from the LAN e Classical IP RFC 1577 Some Internet service providers in Europe for example use Classical IP in their ADSL services In such cases the router is able to use the Classical IP address from the ISP Introduction 2 3 Reference Manual for the Model DG834 ADSL Firewall Router PPP over Ethernet PPPoE PPP over Ethernet is a protocol for connecting remote hosts to the Internet over an ADSL connection by simulating a dial up connection This feature eliminates the need to run a login program such as EnterNet or WinPOET on your computer PPP over ATM PPPoA PPP over ATM is a protocol for connecting remote hosts to the Internet over an ADSL connection by simulating an ATM connection Dynamic DNS Dynamic DNS services allow remote users to find your network using a domain name when your IP address is not permanently assigned The router contains a client that can connect to many popular Dynamic DNS services to register your dynamic IP address Universal Plug and Play UPnP UPnP is a networking architecture that provides compatibility among networking technology UPnP compliant routers provide broadband users at home and small businesses with a seamless way to participate in online games videoconferencing and other peer to peer services Easy Installation and Management You ca
22. as a guide e If your main e mail account with your ISP is aaa yyy com then use aaa as your host name Your ISP might call this your account user host computer or system name e If your ISP s mail server is mail xxx yyy com then use xxx yyy com as the domain name ISP Host Name ISP Domain Name For Wireless Access For configuration of the wireless network record the following Wireless Network Name SSID WEP Authentication circle one Automatic Open System or Shared Key WEP Encryption circle one 64 or 128 Passphrase or Key 3 4 Connecting the Router to the Internet Reference Manual for the Model DG834 ADSL Firewall Router Connecting the DG834 to Your LAN This section provides instructions for connecting the DG834 ADSL router Note The Resource CD included with your router contains an animated Installation Assistant to help you through this procedure How to Connect the Router There are four steps to connecting your firewall 1 2 3 4 Connect the router to your ADSL line Connect the router to the computers on your network Log in to the router Connect to the Internet Follow the steps below to connect your router to your network Before you begin locate the ADSL configuration information from your Internet Service Provider ISP 1 CONNECT THE DG834 TO THE ADSL LINE a You need to install a filter on every telephone or device that shares the same phone number as your ADSL
23. can be viewed e Enter the keyword to block all Internet browsing access Up to 32 entries are supported in the Keyword list 5 To delete a keyword or domain select it from the list click Delete Keyword then click Apply 6 To specify a trusted user enter that computer s IP address in the Trusted IP Address box and click Apply You can specify one trusted user which is a computer that will be exempt from blocking and logging Since the trusted user will be identified by an IP address you should configure that computer with a fixed IP address 4 4 Protecting Your Network Reference Manual for the Model DG834 ADSL Firewall Router 7 Click Apply to save your settings Firewall Rules Firewall rules are used to block or allow specific traffic passing through from one side to the other Inbound rules WAN to LAN restrict access by outsiders to private resources selectively allowing only specific outside users to access specific resources Outbound rules LAN to WAN determine what outside resources local users can have access to A firewall has two default rules one for inbound traffic and one for outbound The default rules of the DG834 are e Inbound Block all access from outside except responses to requests from the LAN side e Outbound Allow all access from the LAN side to the outside You can define additional rules that will specify exceptions to the default rules By adding custom rules you can block or
24. date and time the log entry was recorded Description or Action The type of event and what action was taken if any Source IP The IP address of the initiating device for this log entry Source port and interface The service port number of the initiating device and whether it originated from the LAN or WAN Destination The name or IP address of the destination device or Web site Destination port and interface The service port number of the destination device and whether it s on the LAN or WAN Log action buttons are described in Table 5 2 Table 5 2 Security Log action buttons Field Description Refresh Refresh the log screen Clear Log Clear the log entries Send Log Email the log immediately Apply Apply the current settings Cancel Clear the current settings Selecting What Information to Log Besides the standard information listed above you can choose to log additional information Those optional selections are as follows e Attempted access to blocked site e Connections to the Web based interface of the router e Router operation start up get time etc Managing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Known DoS attacks and Port Scans Saving Log Files on a Server You can choose to write the logs to a computer running a syslog program To activate this feature select to Broadcast Lan or ente
25. ime Upgrading the Routers FiO sects siscicinrncisacncrarieratausasaiancceidadnenansdcebteaataansuranigadiane ee How to Upgrade the Router Firmware rk Management Information Viewing Router Sta us and ting aid Satna Logged Mor matON nasiranna ean What Information to Log aving Log Files on a Server peste of a Messag pandi Picket Enabling Security Event E mail Notification sccciacerisisinccnisiniccdnctedconcminciiedostenndanimecntaas Running Diagnostic Utilities and oting the Fatet AE PENE EA A IN AEE ee Enabling Remote Management PEE aea Configuring Remote seal edad ois Teri ere rere errr errr rer errr errr al ee Chapter 6 Advanced Configuration Configuring Advanced Security sie 6 1 Setting Up A Gerani OMZ zerv Connect Automati wii ES CNN EA E T EE A E E E Disable Port Scan and DOS Parin ere err E A A oe Respond to Ping on Internet WAN Port E E E A eid ane ain MTU Size naasna ree Configuring LAN IP Setting ngs E P E E a DHCP Reserved IP elie Contents vii How to Configure LAN TCP IP Settings Configuring Dynamic DNS oaeen i Howto Conigure Dynamit DNS aa ve asceseeer vad cece palace a na O O Using Static Routes cccccccecsceseceseeeeeeeeeeeceeeeeeceaeseeeeseeseeenaeeaeeeas Static Route Example AE E T Chapter 7 Troubleshooting Basic Functioning Power LED Not On Test LED Never Turn
26. in your computer ate on ADSL Firewall Router DG834 Figure 3 6 Connecting a computer to the DG834 ADSL router Note The DG834 ADSL router incorporates Auto Uplink technology Each Ethernet LAN port will automatically sense whether the cable plugged into the port should have a normal connection for example connecting to a computer or an uplink connection for example connecting to a switch or hub That port will then configure itself to the correct configuration This feature also eliminates the need to worry about crossover cables as Auto Uplink will accommodate either type of cable to make the right connection d Connect the power adapter to the router and plug it in to a power outlet Verify the following W The power light is lit after turning on the router The ADSL link light is solid green indicating a link has been established to the ADSL network e Now turn on your computer If software usually logs you in to your Internet connection do not run that software or cancel it if it starts automatically Verify the following 4 The local lights are lit for any connected computers Note For instructions on connecting computers to the DG834 via wireless links please see the Chapter 4 Wireless Configuration Connecting the Router to the Internet 3 7 Reference Manual for the Model DG834 ADSL Firewall Router
27. is called the Default DMZ Server How to Configure a Default DMZ Server To assign a computer or server to be a Default DMZ server follow these steps 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever Password and LAN address you have chosen for the router 2 From the Main Menu under Advanced click the WAN Setup link to view the page shown in Figure 6 1 WAN Setup M Connect Automatically as Required C Disable Port Scan and DOS Protection C Default DMZ Server F Respond to Ping on Internet WAN Port MTU Size in bytes 1492 Figure 6 1 WAN Setup Page 3 Click Default DMZ Server 4 Type the IP address for that server 5 Click Apply to save your changes 6 2 Advanced Configuration Reference Manual for the Model DG834 ADSL Firewall Router Connect Automatically as Required Normally this option should be Enabled so that an Internet connection will be made automatically whenever Internet bound traffic is detected If this causes high connection costs you can disable this setting If disabled you must connect manually using the sub screen accessed from the Connection Status button on the Status screen If you have an Always on connection this setting has no effect Disable Port Scan and DOS Protection The Firewall protects your LAN against Port Scans and Deni
28. maintain a picture of the network is the Routing Information Protocol RIP Using RIP routers periodically update one another and check for changes to add to the routing table The DG834 ADSL router supports both the older RIP 1 and the newer RIP 2 protocols Among other improvements RIP 2 supports subnet and multicast protocols RIP is not required for most home applications IP Addresses and the Internet Because TCP IP networks are interconnected across the world every machine on the Internet must have a unique address to make sure that transmitted data reaches the correct destination Blocks of addresses are assigned to organizations by the Internet Assigned Numbers Authority IANA Individual users and small organizations may obtain their addresses either from the ANA or from an Internet service provider ISP You can contact IANA at www iana org The Internet Protocol IP uses a 32 bit address structure The address is usually written in dot notation also called dotted decimal notation in which each group of eight bits is written in decimal form separated by decimal points For example the following binary address 11000011 00100010 00001100 00000111 is normally written as 195 34 12 7 The latter version is easier to remember and easier to enter into your computer In addition the 32 bits of the address are subdivided into two parts The first part of the address identifies the network and the second part identifies
29. provides continuous high speed 10 100 Ethernet access between your Ethernet devices The DG834 ADSL router enables your entire network to share an Internet connection through the built in ADSL modem that otherwise is used by a single computer With minimum setup you can install and use the router within minutes The DG834 ADSL router provides multiple Web content filtering options plus e mail browsing activity reporting and instant alerts Parents and network administrators can establish restricted access policies based on time of day Web site addresses and address keywords and share high speed ADSL Internet access for up to 253 personal computers The included firewall and Network Address Translation NAT features protect you from hackers Introduction 2 1 Reference Manual for the Model DG834 ADSL Firewall Router Key Features The DG834 ADSL router provides the following features e A powerful true firewall e Content filtering e Auto Sensing and Auto Uplink LAN Ethernet connections e Extensive Internet protocol support e Easy Web based setup for installation and management A built in ADSL modem These features are discussed below A Powerful True Firewall Unlike simple Internet sharing NAT routers the DG834 is a true firewall using stateful packet inspection to defend against hacker attacks Its firewall features include e Denial of Service DoS protection Automatically detects and thwarts Denial
30. result of the default inbound rule which states that all inbound packets are denied 5 12 Managing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Enabling Security Event E mail Notification In order to receive logs and alerts by e mail you must provide your e mail information in the E mail subheading E mail C Tun E maili Hosificaion On e Turn e mail notification on Select this box if you want to receive e mail logs and alerts from the router e Send alerts and logs via email Enter the name or IP address of your ISP s outgoing SMTP mail server such as mail myISP com You may be able to find this information in the configuration menu of your e mail program Enter the e mail address to which logs and alerts are sent This e mail address will also be used as the From address If you leave this box blank log and alert messages will not be sent via e mail e Send alert immediately Select a box if you would like immediate notification of a significant security event such as a known attack port scan or attempted access to a blocked site e Send logs according to this schedule Specifies how often to send the logs Hourly Daily Weekly or When Full Day for sending log Specifies which day of the week to send the log Relevant when the log is sent weekly or daily Time for sending log Specifies the time of day to send the log Relevant when the log is sent daily o
31. to the router and reboot your computer If your router s IP address was changed and you do not know the current IP address clear the router s configuration to factory defaults This will set the router s IP address to 192 168 0 1 This procedure is explained in Using the Reset button on page 7 9 Make sure your browser has Java JavaScript or ActiveX enabled If you are using Internet Explorer click Refresh to be sure the Java applet is loaded Try quitting the browser and launching it again Make sure you are using the correct login information The factory default login name is admin and the password is password Make sure that CAPS LOCK is off when entering this information If the router does not save changes you have made in the Web Configuration Interface check the following When entering configuration settings be sure to click the APPLY button before moving to another menu or tab or your changes are lost Troubleshooting 7 3 Reference Manual for the Model DG834 ADSL Firewall Router e Click the Refresh or Reload button in the Web browser The changes may have occurred but the Web browser may be caching the old configuration Troubleshooting the ISP Connection If your router is unable to access the Internet you should check the ADSL connection then the WAN TCP IP connection ADSL link If your router is unable to access the Internet you should first determine whether you have an ADSL link w
32. to the receiver of the other device The crossover function is usually implemented internally as part of the circuitry in the device Computers and workstation adapter cards are usually media dependent interface ports called MDI or uplink ports Most repeaters and switch ports are configured as media dependent interfaces with built in crossover ports called MDI X or normal ports Auto Uplink technology automatically senses which connection MDI or MDI X is needed and makes the right connection Figure B 1 illustrates straight through twisted pair cable Key A UPLINK OR MDI PORT as on a PC B Normal or MDI X port as on a hub or switch 1 2 3 6 Pin numbers Figure B 1 Straight Through Twisted Pair Cable Figure B 2 illustrates crossover twisted pair cable Key B Normal or MDI X port as on a hub or switch 1 2 3 6 Pin numbers Figure B 2 Crossover Twisted Pair Cable Network and Routing Basics B 13 Reference Manual for the Model DG834 ADSL Firewall Router Key 1 RJ 45 plug 2 Category 5 UTP patch cable Figure B 3 Category 5 UTP Cable with Male RJ 45 Plug at Each End Note Flat silver satin telephone cable may have the same RJ 45 plug However using telephone cable results in excessive collisions causing the attached port to be partitioned or disconnected from the network Uplink Switches Crossover Cables and MDI MDIX Switching In the wiring table above the concept of tran
33. turns on about 10 seconds 2 Release the Default Reset button and wait for the router to reboot Problems with Date and Time The E mail menu in the Content Filtering section displays the current date and time of day The DG834 ADSL router uses the Network Time Protocol NTP to obtain the current time from one of several Network Time Servers on the Internet Each entry in the log is stamped with the date and time of day Problems with the date and time function can include e Date shown is January 1 2000 Cause The router has not yet successfully reached a Network Time Server Check that your Internet access settings are configured correctly If you have just completed configuring the router wait at least five minutes and check the date and time again e Time is off by one hour Cause The router does not automatically sense Daylight Savings Time In the E mail menu check or uncheck the box marked Adjust for Daylight Savings Time Troubleshooting 7 9 Reference Manual for the Model DG834 ADSL Firewall Router 7 10 Troubleshooting Appendix A Technical Specifications This appendix provides technical specifications for the DG834 ADSL Firewall Router Network Protocol and Standards Compatibility Data and Routing Protocols Power Adapter North America United Kingdom Australia Europe Japan All regions output Physical Specifications Dimensions Weight Environmental Specifications Operati
34. you are using the default TCP IP settings that NETGEAR recommends e The IP Address is between 192 168 0 2 and 192 168 0 254 e The Subnet mask is 255 255 255 0 e The Router address is 192 168 0 1 If you do not see these values you may need to restart your Macintosh or you may need to switch the Configure setting to a different option then back again to Using DHCP Server Preparing Your Network C 17 Reference Manual for the Model DG834 ADSL Firewall Router Verifying the Readiness of Your Internet Account For broadband access to the Internet you need to contract with an Internet service provider ISP for a single user Internet access account using a cable modem or DSL modem This modem must be a separate physical box not a card and must provide an Ethernet port intended for connection to a Network Interface Card NIC in a computer Your router does not support a USB connected broadband modem For a single user Internet account your ISP supplies TCP IP configuration information for one computer With a typical account much of the configuration information is dynamically assigned when your PC is first booted up while connected to the ISP and you will not need to know that dynamic information In order to share the Internet connection among several computers your router takes the place of the single PC and you need to configure it with the TCP IP information that the single PC would normally use When the route
35. 3 Enter the TCP IP DHCP or Reserved IP parameters 4 Click Apply to save your changes Configuring Dynamic DNS If your network has a permanently assigned IP address you can register a domain name and have that name linked with your IP address by public Domain Name Servers DNS However if your Internet account uses a dynamically assigned IP address you will not know in advance what your IP address will be and the address can change frequently In this case you can use a commercial dynamic DNS service that will allow you to register your domain to their IP address and will forward traffic directed at your domain to your frequently changing IP address The router contains a client that can connect to a dynamic DNS service provider To use this feature you must select a service provider and obtain an account with them After you have configured your account information in the router whenever your ISP assigned IP address changes your router will automatically contact your dynamic DNS service provider log in to your account and register your new IP address Advanced Configuration 6 7 Reference Manual for the Model DG834 ADSL Firewall Router How to Configure Dynamic DNS 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever User Name Password and LAN address you have chosen for the router 2 From the Main Menu of the brow
36. 8 0 100 The static route would look like Figure 6 5 In this example e The Destination IP Address and IP Subnet Mask fields specify that this static route applies to all 134 177 x x addresses Advanced Configuration 6 9 Reference Manual for the Model DG834 ADSL Firewall Router The Router IP Address fields specifies that all traffic for these addresses should be forwarded to the ISDN router at 192 168 0 100 A Metric value of 1 will work since the ISDN router is on the LAN This represents the number of routers between your network and the destination This is a direct connection so it is set to 1 Private is selected only as a precautionary security measure in case RIP is activated How to Configure Static Routes 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever User Name Password and LAN address you have chosen for the router From the Main Menu of the browser interface under Advanced click Static Routes to view the Static Routes menu shown in Figure 6 4 Static Routes Active Name Destination Gateway 1 YES isdn_ttr 134 177 0 0 192 168 0 100 Add Edit Delete Figure 6 4 Static Routes Table 6 10 Advanced Configuration Reference Manual for the Model DG834 ADSL Firewall Router 3 To add or edit a Static Route a Click the Edit button to open the Edit Menu shown in
37. B address gives us 16 bits of node numbers translating to 64 000 nodes Most organizations do not use 64 000 nodes so there are free bits that can be reassigned Subnet addressing makes use of those bits that are free as shown below Class B i Network Subnet Node Figure 7 2 Example of Subnetting a Class B Address A Class B address can be effectively translated into multiple Class C addresses For example the IP address of 172 16 0 0 is assigned but node addresses are limited to 255 maximum allowing eight extra bits to use as a subnet address The IP address of 172 16 97 235 would be interpreted as IP network address 172 16 subnet number 97 and node number 235 In addition to extending the number of addresses available subnet addressing provides other benefits Subnet addressing allows a network manager to construct an address scheme for the network by using different subnets for other geographical locations in the network or for other departments in the organization Although the preceding example uses the entire third octet for a subnet address note that you are not restricted to octet boundaries in subnetting To create more network numbers you need only shift some bits from the host address to the network address For instance to partition a Class C network number 192 68 135 0 into two you shift one bit from the host address to the network address The new netmask or subnet mask is 255 255 255 128 The first subnet
38. Current Settings Restore Saved Settings from a File Browse Revert to Factory Default Settings Erase Figure 5 1 Backup Settings menu 3 Click Backup to save a copy of the current settings Managing Your Network 5 1 Reference Manual for the Model DG834 ADSL Firewall Router 4 Store the cfg file on a computer on your network How to Restore the Configuration from a File 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever User Name Password and LAN address you have chosen for the router 2 From the Maintenance heading of the Main Menu select the Settings Backup menu as seen in Figure 5 1 3 Enter the full path to the file on your network or click the Browse button to locate the file 4 When you have located the cfg file click the Restore button to upload the file to the router 5 The router will then reboot automatically How to Erase the Configuration It is sometimes desirable to restore the router to the factory default settings This can be done by using the Erase function 1 To erase the configuration from the Maintenance menu Settings Backup link click the Erase button on the screen 2 The router will then reboot automatically After an erase the router s password will be password the LAN IP address will be 192 168 0 1 and the router s DHCP client will be enabled Note To resto
39. Figure 6 5 Static Routes Route Name isdn_rtr M Private M Active Destination IP Address E fv fo fo IP Subnet Mask fess fess fo fo Gateway IP Address 192 168 fi 100 Metric i Apply Cancel Figure 6 5 Static Route Entry and Edit Menu b Type a route name for this static route in the Route Name box under the table This is for identification purpose only c Select Private if you want to limit access to the LAN only The static route will not be reported in RIP d Select Active to make this route effective e Type the Destination IP Address of the final destination f Type the IP Subnet Mask for this destination If the destination is a single host type 255 255 255 255 g Type the Gateway IP Address which must be a router on the same LAN segment as the router h Type a number between 1 and 15 as the Metric value This represents the number of routers between your network and the destination Usually a setting of 2 or 3 works but if this is a direct connection set it to 1 4 Click Apply to have the static route entered into the table Advanced Configuration 6 11 Reference Manual for the Model DG834 ADSL Firewall Router Advanced Configuration Chapter 7 Troubleshooting This chapter gives information about troubleshooting your DG834 ADSL Firewall Router After each problem description instructions are provided to help you diagnose and solve the problem For the common proble
40. MiS asses nnnsandesesievagaseeanpcnassese naeia eea 3 1 BES Lie errs ie sein enn sobineR Nua 3 1 ADSL Microfilter with Built In Sphtter is cccccccesendcaccca neers ss cisecendtanecsiaansenees 3 2 Etheriet Cabling Require Mii erusin tncmebtievanderiadaucdetets 3 2 Computer Hardware Requirements sasosiiiirisiisnsrsisimi iiien aiaia 3 2 LAN Configuration Reguirements sec scccvasaserscssiiess seccasiwctnnenexoaset ene sdaees iiie iii 3 2 internet Configuration ReguirementS sisii 3 3 Where Do Get the Internet Configuration Parameters cccseeeeeseeeesteeteenees 3 3 Record Your Internet Connection Information cccccesesceececeeeeeneeeeseteeeeeeeeeeees 3 3 Contents V Connecting the DG834 to Your LAN 0 How to LanDaR the Router Testing Your Int net Ears MiA Manually Configuring Your Internet C Perform Manual Gon gu ation et Connec Internet Connection Pacing Login ana Usas PPPoA E a ternet Connection Does Note Require A Login 0 0 cee eeeeeeeeeeeeees Bitki none How to Block Keywori Firewall Rules Inbound fechas eae of Prece Nase sate tances ested E A E E E A E E Ee How to Define Services Setting Times a How to Set Your Time on vi Contents How to Schedule Firewall Services cccccessecsscccceeecescesesntenecaseeseeeseessessesneneeen 4 15 Chapter 5 Managing Your Network How to Erase the Configuratii cuiu isenisiirienienirs ii
41. Number for either the Virtual Path Identifier VPI or Virtual Channel Identifier VCI Note The correct country must be selected from the Setup Wizard s first page for the default ADSL Settings to work Connecting the Router to the Internet 3 19 Reference Manual for the Model DG834 ADSL Firewall Router If your ISP provided you with a specific Multiplexing Method or VPI VCI number then fill in the following 1 2 3 4 5 Select the ADSL Settings link from the main menu For the Multiplexing Method select LLC based or VC based Type a number between 0 and 255 for the VPI The default is 8 Type a number between 1 and 65535 for the VCI The default is 35 Click Apply 3 20 Connecting the Router to the Internet Chapter 4 Protecting Your Network This chapter describes how to use the basic firewall features of the DG834 ADSL Firewall Router to protect your network Protecting Access to Your DG834 ADSL Firewall Router For security reasons the router has its own user name and password Also after a period of inactivity for a set length of time the administrator login will automatically disconnect When prompted enter admin for the router User Name and password for the router Password You can use procedures below to change the router s password and the amount of time for the administrator s login timeout Note The user name and password are not the same as any user name or password your may use to log
42. Phone Figure 3 2 ADSL microfilter with built in splitter Use an ADSL microfilter with built in splitter when there is a single wall outlet which must provide connectivity for both the DG834 and telephone equipment Ethernet Cabling Requirements The DG834 ADSL router connects to your Ethernet LAN via twisted pair cables If the computer will connect to your network at 100 Mbps you must use a Category 5 CATS cable such as the one provided with your router Computer Hardware Requirements To use the DG834 ADSL router on your network each computer must have an installed Ethernet adapter and an Ethernet cable or a 802 11g wireless adapter LAN Configuration Requirements For the initial connection to the Internet and configuration of your router you need to connect a computer to the router which is set to automatically get its TCP IP configuration from the router via DHCP Note Please refer to Appendix C Preparing Your Network for assistance with DHCP configuration 3 2 Connecting the Router to the Internet Reference Manual for the Model DG834 ADSL Firewall Router Internet Configuration Requirements Depending on how your ISP set up your Internet account you need one or more of these configuration parameters to connect your router to the Internet e Virtual Path Identifier VPD Virtual Channel Indentifier VCI parameters e Multiplexing Method e Host and Domain Names e ISP Login Name and Passw
43. Properties After your PC is configured and has rebooted you can check the TCP IP configuration using the utility winipcfg exe 1 On the Windows taskbar click the Start button and then click Run C 6 Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Type winipefg and then click OK The IP Configuration window opens which lists among other things your IP address subnet mask and default gateway From the drop down box select your Ethernet adapter The window is updated to show your settings which should match the values below if you are using the default TCP IP settings that NETGEAR recommends for connecting through a router or gateway e The IP address is between 192 168 0 2 and 192 168 0 254 e The subnet mask is 255 255 255 0 e The default gateway is 192 168 0 1 Configuring Windows NT4 2000 or XP for IP Networking As part of the PC preparation process you may need to install and configure TCP IP on each networked PC Before starting locate your Windows CD you may need to insert it during the TCP IP installation process Installing or Verifying Windows Networking Components To install or verify the necessary components for IP networking 1 2 3 On the Windows taskbar click the Start button point to Settings and then click Control Panel Double click the Network and Dialup Connections icon If an Ethernet adapter is present in your PC you should see an e
44. Ps maintain their own DNS servers and allow their customers to use the servers to look up addresses IP Configuration by DHCP When an IP based local area network is installed each PC must be configured with an IP address If the PCs need to access the Internet they should also be configured with a gateway address and one or more DNS server addresses As an alternative to manual configuration there is a method by which each PC on the network can automatically obtain this configuration information A device on the network may act as a Dynamic Host Configuration Protocol DHCP server The DHCP server stores a list or pool of IP addresses along with other information such as gateway and DNS addresses that it may assign to the other devices on the network The DG834 ADSL router has the capacity to act as a DHCP server The DG834 ADSL router also functions as a DHCP client when connecting to the ISP The router can automatically obtain an IP address subnet mask DNS server addresses and a gateway address if the ISP provides this information by DHCP Internet Security and Firewalls When your LAN connects to the Internet through a router an opportunity is created for outsiders to access or disrupt your network A NAT router provides some protection because by the very nature of the Network Address Translation NAT process the network behind the NAT router is shielded from access by outsiders on the Internet However there are methods by wh
45. Reference Manual for the Model DG834 ADSL Firewall Router Verify that the Obtain an IP address automatically radio button is selected e Verify that Obtain DNS server address automatically radio button is selected e Click the OK button This completes the DHCP configuration of TCP IP in Windows XP Repeat these steps for each PC with this version of Windows on your network Internet Protocol TCP IP Properties General Alternate Configuration You can get IP settings assigned automatically if your network supports this capability Otherwise you need to ask your network administrator for the appropriate IP settings Obtain an IP address automatically Use the following IP address Obtain DNS server address automatically Use the following DNS server addresses DHCP Configuration of TCP IP in Windows 2000 Once again after you have installed the network card TCP IP for Windows 2000 is configured TCP IP should be added by default and set to DHCP without your having to configure it However if there are problems follow these steps to configure TCP IP with DHCP for Windows 2000 Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router e Click on the My Network Places icon on the Windows desktop This will bring up a window called Network and Dial up Connections e Right click on Local Area Connection and select Properties E Local Area Connecti
46. Routing Basics Reference Manual for the Model DG834 ADSL Firewall Router NETGEAR strongly recommends that you configure all hosts on a LAN segment to use the same netmask for the following reasons e So that hosts recognize local IP broadcast packets When a device broadcasts to its segment neighbors it uses a destination address of the local network address with all ones for the host address In order for this scheme to work all devices on the segment must agree on which bits comprise the host address e So that a local router or bridge recognizes which addresses are local and which are remote Private IP Addresses If your local network is isolated from the Internet for example when using NAT you can assign any IP addresses to the hosts without problems However the IANA has reserved the following three blocks of IP addresses specifically for private networks T0 07040 10 255 255 255 172 16 0 0 172 31 255 255 192 168 0 0 192 168 255 255 NETGEAR recommends that you choose your private network number from this range The DHCP server of the DG834 ADSL router is preconfigured to automatically assign private addresses Regardless of your particular situation do not create an arbitrary IP address always follow the guidelines explained here For more information about address assignment refer to RFC 1597 Address Allocation for Private Internets and RFC 1466 Guidelines for Management of IP Address Space The Internet Engi
47. address and subnet mask are shown write down the information If an address is present your account uses a fixed static IP address If no address is present your account uses a dynamically assigned IP address Click Obtain an IP address automatically 5 Select the Gateway tab Preparing Your Network C 19 Reference Manual for the Model DG834 ADSL Firewall Router If an IP address appears under Installed Gateways write down the address This is the ISP s gateway address Select the address and then click Remove to remove the gateway address Select the DNS Configuration tab If any DNS server addresses are shown write down the addresses If any information appears in the Host or Domain information box write it down Click Disable DNS Click OK to save your changes and close the TCP IP Properties dialog box You are returned to the Network window Click OK Reboot your PC at the prompt You may also be prompted to insert your Windows CD Obtaining ISP Configuration Information for Macintosh Computers As mentioned above you may need to collect configuration information from your Macintosh so that you can use this information when you configure the DG834 ADSL router Following this procedure is only necessary when your ISP does not dynamically supply the account information To get the information you need to configure the router for Internet access i From the Apple menu select Control Panels then TCP IP
48. al of Service DOS attacks This should be disabled only in special circumstances Respond to Ping on Internet WAN Port If you want the router to respond to a ping from the Internet select the Respond to Ping on Internet WAN Port check box This should only be used as a diagnostic tool since it allows your router to be discovered Do not select this box unless you have a specific reason to do so MTU Size The normal MTU Maximum Transmit Unit value for most Ethernet networks is 1500 Bytes or 1492 Bytes for PPPoE connections For some ISPs you may need to reduce the MTU But this is rarely required and should not be done unless you are sure it is necessary for your ISP connection Configuring LAN IP Settings The LAN IP Setup menu allows configuration of LAN IP services such as DHCP and RIP These features can be found under the Advanced heading in the Main Menu of the browser interface The router is shipped preconfigured to use private IP addresses on the LAN side and to act as a DHCP server The router s default LAN IP configuration is e LAN IP addresses 192 168 0 1 e Subnet mask 255 255 255 0 Advanced Configuration 6 3 Reference Manual for the Model DG834 ADSL Firewall Router These addresses are part of the Internet Engineering Task Force IETF designated private address range for use in private networks and should be suitable in most applications If your network has a requirement to use a differen
49. anage the IP addresses the DG834 uses Classical routing should selected only by experienced users Note Disabling NAT will reboot the router and reset all the DG834 configuration settings to the factory default Disable NAT only if you plan to install the DG834 in a setting where you will be manually administering the IP address space on the LAN side of the router 6 Router MAC Address This section determines the Ethernet MAC address that will be used by the router on the Internet port Some ISPs will register the Ethernet MAC address of the network interface card in your computer when your account is first opened They will then only accept traffic from the MAC address of that computer This feature allows your router to masquerade as that computer by cloning its MAC address To change the MAC address select Use this Computer s MAC address The router will then capture and use the MAC address of the computer that you are now using You must be using the one computer that is allowed by the ISP Alternatively select Use this MAC address and enter it 7 Click Apply to save your settings 8 Click the Test button to test your Internet connection If the NETGEAR Web site does not appear within one minute refer to Chapter 7 Troubleshooting ADSL Settings The default settings of your DG834 ADSL Firewall Router will work fine for most ISPs However some ISPs use a specific Multiplexing Method or a Virtual Circuit
50. are security issues with doing this so only do this if you are willing to risk open access See Domain Name Server A descriptive name for an address or group of addresses on the Internet Domain names are of the form of a registered entity name plus one of a number of predefined top level suffixes such as com edu uk and so on For example in the address mail NETGEAR com mail is a server name and NETGEAR com is the domain A Domain Name Server DNS resolves descriptive names of network resources such as www NETGEAR com to numeric IP addresses DSL Access Multiplexor The piece of equipment at the telephone company central office that provides the ADSL signal DHCP An Ethernet protocol specifying how a centralized DHCP server can assign network configuration information to multiple DHCP clients The assigned information includes IP addresses DNS addresses and gateway router addresses A local device usually a router that connects hosts on a local network to other networks See Internet Protocol Glossary Reference Manual for the Model DG834 ADSL Firewall Router IP Address IPSec ISP Internet Protocol LAN local area network MAC address Mbps MDI MDIX MSB MTU Maximum Transmit Unit Most Significant Bit or Most Significant Byte NAT A four byte number uniquely defining each host on the Internet Ranges of addresses are assigned by Internic an organization formed for this purpose
51. ay the menu shown in Figure 5 2 Router Upgrade Locate and Select the Upgrade File from your Hard Disk Figure 5 2 Router Upgrade menu 4 5 4 In the Router Upgrade menu click the Browse to locate the binary BIN or IMG upgrade file Click Upload Note When uploading software to the router it is important not to interrupt the Web browser by closing the window clicking a link or loading a new page If the browser is interrupted it may corrupt the software When the upload is complete your router will automatically restart The upgrade process will typically take about one minute In some cases you may need to clear the configuration and reconfigure the router after upgrading Managing Your Network 5 3 Reference Manual for the Model DG834 ADSL Firewall Router Network Management Information The DG834 provides a variety of status and usage information which is discussed below Viewing Router Status and Usage Statistics From the Main Menu under Maintenance select Router Status to view the screen in Figure 5 3 Router Status Account Name Firmware Version ADSL Port MAC Address 00 09 5b 70 46 26 IP Address 63 199 31 112 DHCP PPPOE IP Subnet Mask 255 255 255 255 Domain Name Server 206 13 31 12 LAN Port MAC Address 00 09 5b 70 46 26 IP Address 192 168 0 1 DHCP On IP Subnet Mask 255 255 255 0 Modem ADSL Firmware Version 1 00 05 00 Modem Status Connected DownS
52. ays gt Send to LAN Server 192 168 29 WAN Users Any m satb p p p nisn P p e Never Back Cancel Figure 4 5 Rule example A Local Public Web Server The parameters are e Service From this list select the application or service to be allowed or blocked The list already displays many common services but you are not limited to these choices Use the Services menu to add any additional services or applications that do not already appear e Action Choose how you want this type of traffic to be handled You can block or allow always or you can choose to block or allow according to the schedule you have defined in the Schedule menu e Send to LAN Server Enter the IP address of the computer or server on your LAN which will receive the inbound traffic covered by this rule Protecting Your Network 4 7 Reference Manual for the Model DG834 ADSL Firewall Router e WAN Users These settings determine which packets are covered by the rule based on their source WAN IP address Select the desired option e Any all IP addresses are covered by this rule e Address range if this option is selected you must enter the Start and Finish fields e Single address enter the required address in the Start fields e Log You can select whether the traffic will be logged The choices are e Never no log entries will be made for this service e Always any traffic for this service type will be logged
53. b ports if any that are connected to your workstation and router Wrong network configuration Verify that the Ethernet card driver software and TCP IP software are both installed and configured on your PC or workstation Verify that the IP address for your router and your workstation are correct and that the addresses are on the same subnet Testing the Path from Your Computer to a Remote Device After verifying that the LAN path works correctly test the path from your PC to a remote device From the Windows run menu type PING n 10 lt IP address gt where lt P address gt is the IP address of a remote device such as your ISP s DNS server If the path is functioning correctly replies as in the previous section are displayed If you do not receive replies Check that your PC has the IP address of your router listed as the default router If the IP configuration of your PC is assigned by DHCP this information will not be visible in your PC s Network Control Panel Verify that the IP address of the router is listed as the default router as described in Verifying TCP IP Properties on page C 6 Check to see that the network address of your PC the portion of the IP address specified by the netmask is different from the network address of the remote device Check that your cable or DSL modem is connected and functioning If your ISP assigned a host name to your PC enter that host name as the Account Name in t
54. between sources and destinations A Service Set Identification is a thirty two character maximum alphanumeric key identifying a wireless local area network For the wireless devices in a network to communicate with each other all devices must be configured with the same SSID This is typically the configuration parameter for a wireless computer card It corresponds to the ESSID in the wireless Access Point and to the wireless network name See also Wireless Network Name and ESSID See netmask UPnP A networking architecture that provides compatibility among networking technology UPnP compliant routers provide broadband users at home and small businesses with a seamless way to participate in online games video conferencing and other peer to peer services Unshielded twisted pair The cable used by 10BASE T and 100BASE Tx Ethernet networks Virtual Channel Identifier Together with the VPI defines a Virtual Channel through an ATM network Used by ATM switching equipment to route data through the network Virtual Path Identifier Together with the VCI defines a Virtual Channel through an ATM network Used by ATM switching equipment to route data through the network See wide area network Wired Equivalent Privacy WEP is a data encryption protocol for 802 11b wireless networks All wireless nodes and access points on the network are configured with a 64 bit or 128 bit Shared Key for data encryption WAN A long distance link us
55. button allows you to relocate a defined rule to a new position in the table Services Services are functions performed by server computers at the request of client computers For example Web servers serve Web pages time servers serve time and date information and game hosts serve data about other players moves When a computer on the Internet sends a request for service to a server computer the requested service is identified by a service or port number This number appears as the destination port number in the transmitted IP packets For example a packet that is sent with destination port number 80 is an HTTP Web server request The service numbers for many common protocols are defined by the Internet Engineering Task Force IETF and published in RFC1700 Assigned Numbers Service numbers for other applications are typically chosen from the range 1024 to 65535 by the authors of the application 4 12 Protecting Your Network Reference Manual for the Model DG834 ADSL Firewall Router Although the DG834 already holds a list of many service port numbers you are not limited to these choices Use the procedure below to create your own service definitions How to Define Services 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever Password and LAN address you have chosen for the router 2 Select the Services link
56. d you can attempt to reconnect by clicking Connect The router will continue to attempt to connect indefinitely If you cannot connect after several minutes you may be using an incorrect Service Name User Name or Password There also may be a provisioning problem with your ISP Note Unless you connect manually the router will not authenticate using PPPoE or gt PPPoA until data is transmitted to the network Troubleshooting Internet Browsing If your router can obtain an IP address but your computer is unable to load any Web pages from the Internet e Your computer may not recognize any DNS server addresses 7 6 Troubleshooting Reference Manual for the Model DG834 ADSL Firewall Router A DNS server is a host on the Internet that translates Internet names such as www addresses to numeric IP addresses Typically your ISP will provide the addresses of one or two DNS servers for your use If you entered a DNS address during the router s configuration reboot your computer and verify the DNS address as described in Verifying TCP IP Properties on page C 6 Alternatively you can configure your computer manually with DNS addresses as explained in your operating system documentation Your computer may not have the router configured as its TCP IP router If your computer obtains its information from the router by DHCP reboot the computer and verify the router address as described in Verifying TCP
57. doch gewissen Beschr nkungen unterliegen Lesen Sie dazu bitte die Anmerkungen in der Betriebsanleitung Das Bundesamt fiir Zulassungen in der Telekommunikation wurde davon unterrichtet da dieses Ger t auf den Markt gebracht wurde und es ist berechtigt die Serie auf die Erf llung der Vorschriften hin zu berpr fen Certificate of the Manufacturer Importer It is hereby certified that the DG834 ADSL Firewall Router has been suppressed in accordance with the conditions set out in the BMPT AmtsblVfg 243 1991 and Vfg 46 1992 The operation of some equipment for example test transmitters in accordance with the regulations may however be subject to certain restrictions Please refer to the notes in the operating instructions Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and has been granted the right to test the series for compliance with the regulations Voluntary Control Council for Interference VCCI Statement This equipment is in the second category information equipment to be used in a residential area or an adjacent area thereto and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas When used near a radio or TV receiver it may become the cause of radio interference Read instructions for correct handling Custo
58. e Basic Router Concepts Large amounts of bandwidth can be provided easily and relatively inexpensively in a local area network LAN However providing high bandwidth between a local network and the Internet can be very expensive Because of this expense Internet access is usually provided by a slower speed wide area network WAN link such as a cable or DSL modem In order to make the best use of the slower WAN link a mechanism must be in place for selecting and transmitting only the data traffic meant for the Internet The function of selecting and forwarding this data is performed by a router What is a Router A router is a device that forwards traffic between networks based on network layer information in the data and on routing tables maintained by the router In these routing tables a router builds up a logical picture of the overall network by gathering and exchanging information with other routers in the network Using this information the router chooses the best path for forwarding network traffic Routers vary in performance and scale number of routing protocols supported and types of physical WAN connection they support The DG834 ADSL Firewall Router is a small office router that routes the IP protocol over a single user broadband connection Network and Routing Basics B 1 Reference Manual for the Model DG834 ADSL Firewall Router Routing Information Protocol One of the protocols used by a router to build and
59. e Match traffic of this type which matches the parameters and action will be logged e Not match traffic of this type which does not match the parameters and action will be logged Inbound Rule Example Allowing Videoconferencing If you want to allow incoming videoconferencing to be initiated from a restricted range of outside IP addresses such as from a branch office you can create an inbound rule In the example shown in Figure 4 6 CU SeeMe connections are allowed only from a specified range of external IP addresses In this case we have also specified logging of any incoming CU SeeMe requests that do not match the allowed parameters Inbound Services Service CU SEEME TCP UDP 7648 gt Action ALLOW always gt Send to LAN Server 192 168 JO fl WAN Users Address Range v start 134 177 88 l finish 134 177 88 254 Not Match x Back Cancel Figure 4 6 Rule example Videoconference from Restricted Addresses 4 8 Protecting Your Network Reference Manual for the Model DG834 ADSL Firewall Router Considerations for Inbound Rules If your external IP address is assigned dynamically by your ISP the IP address may change periodically as the DHCP lease expires Consider using the Dynamic DNS feature in the Advanced menus so that external users can always find your network If the IP address of the local server computer is assigned by DHCP it may change when the computer is rebooted To avoid thi
60. e size in bytes of the largest packet that can be sent or received The portion of a number address or field that is farthest left when written as a single number in conventional hexadecimal ordinary notation The part of the number having the most value See Network Address Translation Glossary Reference Manual for the Model DG834 ADSL Firewall Router Netmask Network Address Translation packet PPP PPPoA PPPoE PPP over ATM PPP over Ethernet PPTP PSTN Point to Point Protocol RADIUS RFC RIP A number that explains which part of an IP address comprises the network address and which part is the host address on that network It can be expressed in dotted decimal notation or as a number appended to the IP address For example a 28 bit mask starting from the MSB can be shown as 255 255 255 192 or as 28 appended to the IP address A technique by which several hosts share a single IP address for access to the Internet A block of information sent over a network A packet typically contains a source and destination network address some protocol and length information a block of data and a checksum See Point to Point Protocol See PPP over ATM See PPP over Ethernet PPPoA PPP over ATM is a protocol for connecting remote hosts to the Internet over an always on connection by simulating a dial up connection PPPoE PPP over Ethernet is a protocol for connecting remote hosts to the Internet over
61. e supplied by server gt Subnet mask lt will be supplied by server gt Router address lt will be supplied by server gt Search domains Name server addr lt will be supplied by server gt E 2 From the Connect via box select your Macintosh s Ethernet interface 3 From the Configure box select Using DHCP Server You can leave the DHCP Client ID box empty 4 Close the TCP IP Control Panel m Repeat this for each Macintosh on your network MacOS X 1 From the Apple menu choose System Preferences then Network C 16 Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router 2 Ifnot already selected select Built in Ethernet in the Configure list 3 If not already selected Select Using DHCP in the TCP IP tab 4 Click Save Verifying TCP IP Properties for Macintosh Computers After your Macintosh is configured and has rebooted you can check the TCP IP configuration by returning to the TCP IP Control Panel From the Apple menu select Control Panels then TCP IP o TcP IP EB Connect via Ethernet Setup Configure Using DHCP Server DHCP Client ID IP Address 192 168 0 2 Subnet mask 255 255 255 0 Router address 192 168 0 1 Search domains Name server addr 192 168 0 1 The panel is updated to show your settings which should match the values below if
62. ed automatically if your network supports this capability Otherwise you need to ask your network administrator for the appropriate IP settings Obtain an IP address automatically C Use the following IP address IP address Subnet mask Default gateway Obtain DNS server address automatically mC Use the following DNS server addresses Advanced Preferred DNS server Alternate DNS server F e Click OK again to complete the configuration process for Windows 2000 Restart the PC Repeat these steps for each PC with this version of Windows on your network Local Area Connection Properties 2x General Connect using BY 3Com EtherLink XL 10 100 PCI NIC 3C905 TX Components checked are used by this connection M E Client for Microsoft Networks File and Printer Sharing for Microsoft Network sh M Y Intemet Protocol TCP IP Install Uninstall Properties Description Allows other computers to access resources on your computer using a Microsoft network J Show icon in taskbar when connected Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router DHCP Configuration of TCP IP in Windows NT4 Once you have installed the network card you need to configure the TCP IP environment for Windows NT 4 0 Follow this procedure to configure TCP IP with DHCP in Windows NT 4 0 e Choose
63. ed to extend or connect remotely located local area networks The Internet is a large WAN See 802 11b A trade name for the 802 11b wireless networking standard given by the Wireless Ethernet Compatibility Alliance WECA see http www wi fi net an industry standard group promoting interoperability among 802 11b devices Glossary Reference Manual for the Model DG834 ADSL Firewall Router WPA Wi Fi Protected Access WPA is a specification of standards based interoperable security enhancements that increase the level of data protection and access control for existing and future wireless LAN systems 6 Glossary
64. ence Manual for the Model DG834 ADSL Firewall Router ISP Multiplexing Method and Virtual Circuit Number The default settings of your DG834 ADSL Firewall Router will work fine for most ISPs However some ISPs use a specific Multiplexing Method or a Virtual Circuit Number for either the Virtual Path Identifier VPI or Virtual Channel Identifier VCI If your ISP provided you with a specific Multiplexing Method or VPI VCI number then fill in the following Multiplexing Method circle one LLC based or VC based VPI A number between 0 and 255 VCI A number between and 65535 ISP Login Name The login name and password are case sensitive and must be entered exactly as given by your ISP Some ISPs use your full e mail address as the login name The Service Name is not required by all ISPs If you use a login name and password then fill in the following Login Name Password Service Name Fixed or Static IP Address If you have a static IP address record the following information For example 169 254 141 148 could be a valid IP address Fixed or Static Internet IP Address Router IP Address Subnet Mask ISP DNS Server Addresses If you were given DNS server addresses fill in the following Primary DNS Server IP Address Secondary DNS Server IP Address Host and Domain Names Some ISPs use a specific host or domain name like CCA7324 A or home If you did not get host or domain names use the following examples
65. ent Windows systems when using DHCP to configure TCP IP The following steps will walk you through the configuration process for each of these versions of Windows Locate your Network Neighborhood icon e Ifthe Network Neighborhood icon is on the Windows desktop position your mouse pointer over it and right click your mouse button e If the icon is not on the desktop e Click Start on the task bar located at the bottom left of the window e Choose Settings and then Control Panel e Locate the Network Neighborhood icon and click on it This will open the Network panel as shown below C 4 Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Verify the following settings as shown e Client for Microsoft Network exists e Ethernet adapter is present e TCP IP is present e Primary Network Logon is set to Windows logon Click on the Properties button The following TCP IP Properties window will display Network 21x i Configuration Identification Access Control The following network components are installed E Client for Microsoft Networks 3Com Fast EtherLink xL 10 100Mb TX Ethernet Adapter TCP IP Eopenes Primary Network Logon Client for Microsoft Networks x Client for Microsoft Networks fwindows Logon Description The primary network logon is the client that is used to validate your user name and password process any login scripts a
66. enu the Logs page can show you when someone on your network tries to access a blocked site If you enabled e mail notification you will receive these logs in an e mail message If you do not have e mail notification enabled you can view the logs here Managing Your Network 5 9 Reference Manual for the Model DG834 ADSL Firewall Router An example of the logs file is shown below Figure 5 8 Security Logs menu Logs Current time 2003 08 26 07 42 2003 08 26 2003 08 26 2003 08 26 2003 08 26 2003 08 26 2003 08 26 2003 08 26 2003 08 26 2003 08 26 2003 08 26 2003 08 26 2003 08 26 2003 08 26 Send out NTP reque Receive NTP Replay Administrator logi Administrator logi Administrator logi Administrator logi TCP Packet Sourc ICMP Packet Sour TCP Packet Sourc TCP Packet Sourc ICMP Packet Sour TCP Packet Sourc TCP Packet Sourc Fa Refresh Clear Log Send Log Include in Log Vv Attempted access to blocked sites I Connections to the Web based interface of this Router M Router operation start up get time etc M Known DoS attacks and Port Scans Syslog Disable C Broadcast on LAN C Send to this Syslog server IP address Apply Cancel 5 10 Managing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Log entries are described in Table 5 1 below Table 5 1 Security Log entry descriptions Field Description Date and Time The
67. ernet a Let the DG834 auto detect the type of Internet connection you have and configure it See Auto Detecting Your Internet Connection Type on page 3 9 for instructions b Manually choose which type of Internet connection you have and configure it See Manually Configuring Your Internet Connection on page 3 15 for instructions These options are described below In either case unless your ISP automatically assigns your configuration automatically via DHCP you need the configuration parameters from your ISP you recorded in Record Your Internet Connection Information on page 3 3 Auto Detecting Your Internet Connection Type The Web Configuration Manager built in to the router contains a Setup Wizard that can automatically determine your network connection type 1 If your router has not yet been configured the Setup Wizard shown in Figure 3 9 should launch automatically Connecting the Router to the Internet 3 9 Reference Manual for the Model DG834 ADSL Firewall Router Note If instead of the Setup Wizard menu the main menu of the router s Configuration Manager as shown in Figure 3 15 appears click the Setup Wizard link in the upper left to bring up this menu 2 You must select a country and language Language choices are English French German and Italian After you change the language the remaining setup screens change to the language of your choice 3 Select Yes to allow the router to auto
68. ese functions How to Block Keywords and Sites The DG834 ADSL router allows you to restrict access to Internet content based on functions such as Web addresses and Web address keywords 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever Password and LAN address you have chosen for the router Protecting Your Network 4 3 Reference Manual for the Model DG834 ADSL Firewall Router 2 Select the Block Sites link of the Security menu Block Sites Keyword Blocking O Never O Per Schedule Aways Type Keyword or Domain Name Here Add Keyword Block Sites Containing these Keywords or Domain Names Delete Keyword Clear List Allow Trusted IP Address to Visit Blocked Sites Trusted IP Address Figure 4 3 Block Sites menu 3 To enable keyword blocking select one of the following e Per Schedule to turn on keyword blocking according to the settings on the Schedule page e Always to turn on keyword blocking all of the time independent of the Schedule page 4 Enter a keyword or domain in the Keyword box click Add Keyword then click Apply Some examples of Keyword application follow e Ifthe keyword XXX is specified the URL lt http www badstuff com xxx html gt is blocked e Ifthe keyword com is specified only Web sites with other domain suffixes such as edu or gov
69. ess of the ISP s router e One or more domain name server DNS IP addresses e Host name and domain suffix For example your account s full server names may look like this mail xxx yyy com In this example the domain suffix is xxx yyy com If any of these items are dynamically supplied by the ISP your router automatically acquires them If an ISP technician configured your PC during the installation of the broadband modem or if you configured it using instructions provided by your ISP you need to copy the configuration information from your PC s Network TCP IP Properties window or Macintosh TCP IP Control Panel before reconfiguring your PC for use with the router These procedures are described next Obtaining ISP Configuration Information for Windows Computers As mentioned above you may need to collect configuration information from your PC so that you can use this information when you configure the DG834 ADSL router Following this procedure is only necessary when your ISP does not dynamically supply the account information To get the information you need to configure the router for Internet access 1 On the Windows taskbar click the Start button point to Settings and then click Control Panel 2 Double click the Network icon The Network window opens which displays a list of installed components 3 Select TCP IP and then click Properties The TCP IP Properties dialog box opens 4 Select the IP Address tab If an IP
70. f these conditions does not occur refer to the appropriate following section Power LED Not On If the Power and other LEDs are off when your router is turned on e Make sure that the power cord is properly connected to your router and that the power supply adapter is properly connected to a functioning power outlet e Check that you are using the 12 V DC power adapter supplied by NETGEAR for this product If the error persists you have a hardware problem and should contact technical support Test LED Never Turns On or Test LED Stays On When the router is turned on the Test LED turns on for about 10 seconds and then turns off If the Test LED does not turn on or if it stays on there is a fault within the router If you experience problems with the Test LED e Cycle the power to see if the router recovers and the LED blinks for the correct amount of time If all LEDs including the Test LED are still on one minute after power up e Cycle the power to see if the router recovers e Clear the router s configuration to factory defaults This will set the router s IP address to 192 168 0 1 This procedure is explained in Using the Reset button on page 7 9 If the error persists you might have a hardware problem and should contact technical support LAN or WAN Port LEDs Not On If either the LAN LEDs or WAN LED do not light when the Ethernet connection is made check the following e Make sure that the Ethernet cable co
71. ffic will be logged The choices are e Never no log entries will be made for this service e Always any traffic for this service type will be logged e Match traffic of this type that matches the parameters and action will be logged e Not match traffic of this type that does not match the parameters and action will be logged Protecting Your Network 4 11 Reference Manual for the Model DG834 ADSL Firewall Router Order of Precedence for Rules As you define new rules they are added to the tables in the Rules menu as shown in Figure 4 8 Outbound Services Enable Service Name Action LAN Users WAN Servers Log 1 Vv AIM BLOCK by schedule Any Any Match Default Yes Any ALLOW always Any Any Never Add Edit Move Delete Inbound Services Enable Service Name Action LAN Server IP address WAN Users Log f Vv CU SEEME ALLOW always 192 168 0 11 134 177 88 1 134 177 88 254 Not Match v HTTP ALLOW always 192 168 0 99 perau Yes Any pLock always Add Edit Move Delete Figure 4 8 Rules table with examples For any traffic attempting to pass through the firewall the packet information is subjected to the rules in the order shown in the Rules Table beginning at the top and proceeding to the default rules at the bottom In some cases the order of precedence of two or more rules may be important in determining the disposition of a packet The Move
72. h an attached device Blink Green Data is being transmitted or received by the Internet port LAN On Green The Local port has detected link with a 100 Mbps device Blink Green Data is being transmitted or received at 100 Mbps On Amber The Local port has detected link with a 10 Mbps device Blink Amber Data is being transmitted or received at 10 Mbps Off No link is detected on this port 2 6 Introduction Reference Manual for the Model DG834 ADSL Firewall Router The Router s Rear Panel The rear panel of the DG834 ADSL Firewall Router Figure 2 2 contains port connections Internet Power Reset Figure 2 2 DG834 Rear Panel Viewed from left to right the rear panel contains the following elements e AC power adapter outlet e Four Local Ethernet RJ 45 ports for connecting the router to the local computers e Factory Default Reset push button e ADSL port for connecting the router to an ADSL line Introduction 2 7 Reference Manual for the Model DG834 ADSL Firewall Router 2 8 Introduction Chapter 3 Connecting the Router to the Internet This chapter describes how to set up the router on your Local Area Network LAN and connect to the Internet It describes how to configure your DG834 ADSL Firewall Router for Internet access using the Setup Wizard or how to manually configure your Internet connection What You Need Before You Begin You need t
73. has network number 192 68 135 0 with hosts 192 68 135 1 to 129 68 135 126 and the second subnet has network number 192 68 135 128 with hosts 192 68 135 129 to 192 68 135 254 Note The number 192 68 135 127 is not assigned because it is the broadcast address of the first subnet The number 192 68 135 128 is not assigned because it is the network address of the second subnet 4 Network and Routing Basics B 5 Reference Manual for the Model DG834 ADSL Firewall Router The following table lists the additional subnet mask bits in dotted decimal notation To use the table write down the original class netmask and replace the 0 value octets with the dotted decimal value of the additional subnet bits For example to partition your Class C network with subnet mask 255 255 255 0 into 16 subnets 4 bits the new subnet mask becomes 255 255 255 240 Table 7 1 Netmask Notation Translation Table for One Octet Number of Bits Dotted Decimal Value ON O oa A WwW N 128 192 224 240 248 252 254 255 The following table displays several common netmask values in both the dotted decimal and the masklength formats Table 7 2 Netmask Formats Dotted Decimal Masklength 255 0 0 0 8 255 255 0 0 16 255 255 255 0 24 255 255 255 128 25 255 255 255 192 26 255 255 255 224 27 255 255 255 240 28 255 255 255 248 29 255 255 255 252 30 255 255 255 254 31 255 255 255 255 32 B 6 Network and
74. he Basic Settings menu Your ISP could be rejecting the Ethernet MAC addresses of all but one of your PCs Many broadband ISPs restrict access by only allowing traffic from the MAC address of your broadband modem but some ISPs additionally restrict access to the MAC address of a single PC connected to that modem If this is the case you must configure your router to clone or spoof the MAC address from the authorized PC Refer to Manually Configuring Your Internet Connection on page 3 15 7 8 Troubleshooting Reference Manual for the Model DG834 ADSL Firewall Router Restoring the Default Configuration and Password This section explains how to restore the factory default configuration settings changing the router s administration password to password and the IP address to 192 168 0 1 You can erase the current configuration and restore factory defaults in two ways e Use the Erase function of the Web Configuration Manager see Backing Up Restoring or Erasing Your Settings on page 5 1 e Use the Default Reset button on the rear panel of the router Use this method for cases when the administration password or IP address is not known Using the Reset button To restore the factory default configuration settings without knowing the administration password or IP address you must use the Default Reset button on the rear panel of the router 1 Press and hold the Default Reset button until the Test LED
75. he Setup Wizard 1 Soe a Select your country and language Language choices are English French German and Italian After you change the language the remaining setup screens change to the language of your choice Select No to manually configure your router connection Click Next Manually configure the router in the Basic Settings menu shown in Figure 3 15 Follow the instructions below according to the encapsulation method and whether your Internet connection requires a login The following methods are available e Internet Connection Requires Login and Uses PPPoE e Internet Connection Requires Login and Uses PPPoA e Internet Connection Does Not Require a Login Usually the default ADSL Settings work fine for most ISPs and you can skip this step If you have any problems with your connection check the ADSL Settings See ADSL Settings on page 3 19 for more details Internet Connection Requires Login and Uses PPPoE 1 If your Internet connection does require login select Yes and fill in the settings according to the instructions below Note You will no longer need to launch the ISP s login program on your computer in order to access the Internet When you start an Internet application your router automatically logs you in Choose PPPoe for the encapsulation method your ISP uses Enter the login name frequently the email address your ISP provided password and service name if required If you want to cha
76. ich a determined hacker can possibly obtain information about your network or at the least can disrupt your Internet access A greater degree of protection is provided by a firewall router B 10 Network and Routing Basics Reference Manual for the Model DG834 ADSL Firewall Router What is a Firewall A firewall is a device that protects one network from another while allowing communication between the two A firewall incorporates the functions of the NAT router while adding features for dealing with a hacker intrusion or attack Several known types of intrusion or attack can be recognized when they occur When an incident is detected the firewall can log details of the attempt and can optionally send email to an administrator notifying them of the incident Using information from the log the administrator can take action with the ISP of the hacker In some types of intrusions the firewall can fend off the hacker by discarding all further packets from the hacker s IP address for a period of time Stateful Packet Inspection Unlike simple Internet sharing routers a firewall uses a process called stateful packet inspection to ensure secure firewall filtering to protect your network from attacks and intrusions Since user level applications such as FTP and Web browsers can create complex patterns of network traffic it is necessary for the firewall to analyze groups of network connection states Using Stateful Packet Inspection an incom
77. if Required Domain Name If Required I Internet IP Address Use Static IP Address IP Address IP Subnet Mask Gateway IP Address Use IP Over ATM IPOA IP Address IP Subnet Mask Gateway IP Address Domain Name Server DNS Address Primary DNS csp a b mE EEEE a l k Secondary DNS Apply Cancel Test Figure 3 14 Setup Wizard menu for Fixed IP address 1 If required enter the Account Name and Domain Name from your ISP 2 Choose Use Static IP Address or Use IP Over ATM IPoA RFC1483 Routed according to the information from your ISP If you choose IPoA the router will be able to detect the gateway IP address but you still need to provide the router IP address 3 Enter your assigned IP Address Subnet Mask and the IP Address of your ISP s gateway router This information should have been provided to you by your ISP You need the configuration parameters from your ISP you recorded in Record Your Internet Connection Information on page 3 3 Connecting the Router to the Internet 3 13 Reference Manual for the Model DG834 ADSL Firewall Router 4 Enter the IP address of your ISP s Primary DNS Server If a Secondary DNS Server address is available enter it also DNS servers are required to perform the function of translating an Internet name such as www netgear com to a numeric IP address For a fixed IP address configuration you must obtain DNS server addresses from
78. if your ISP uses DHCP to assign your DNS servers Your ISP will automatically assign this address Select Use These DNS Servers if your ISP gave you one or two DNS addresses Type the primary and secondary addresses You should only disable NAT if you are sure you do not require it NAT automatically assigns private IP addresses 192 168 0 x to LAN connected devices When NAT is disabled only standard routing is performed by this router Classical routing lets you directly manage the IP addresses the DG834 uses Classical routing should selected only by experienced users Note Disabling NAT will reboot the router and reset all the DG834 configuration settings to the factory default Disable NAT only if you plan to install the DG834 in a setting where you will be manually administering the IP address space on the LAN side of the router Internet Connection Does Note Require A Login 1 If your Internet connection does not require a login select No and fill in the settings according to the instructions below Enter your Account Name may also be called Host Name and Domain Name These parameters may be necessary to access your ISP s mail or news servers Internet IP Address e Select Get Dynamically from ISP if your ISP uses DHCP to assign your IP address Your ISP will automatically assign these addresses e Select Use Static IP Address if your ISP has assigned you a permanent fixed static IP address Enter the
79. iguring Your Internet Connection You can manually configure your router using the menu below or you can allow the Setup Wizard to determine your configuration as described in the previous section ISP Does Not Require Login Basic Settings Does Your Internet Pafnection Require A Login Account Name f Required Domain Name fRequired Internet IP Address Get Dynamically Fromm ISP O Use Static IP Address IP Address IP Subnet Mas Gateway IP Ad Use P over Al IP Address IP Subnet Mask Gateway IP Ad Domain Name Server DNS Address Get Automatically From ISP Use These ONS Servers Primary ONS Secondary DNS NAT Network Address Translation Enable Disable Router MAC Address Use Default Address O Use Computer MAC Address Figure 3 15 Basic Settings menu ISP Does Require Login Basic Settings Does Your efet Connection Require A Login O Yes No Encapsulation PPPoE PPP over Ethernet Login Password Service Name if Requited lle Timeout in Minutes Domain Name Server DNS Address GetAutoratically From ISP O Use These DNS Servers Primary DNS Secondary DNS NAT Network Address Translation Enable Disable Ay Cancel Connecting the Router to the Internet 3 15 Reference Manual for the Model DG834 ADSL Firewall Router How to Perform Manual Configuration We recommend that you start the manual configuration from t
80. in to your Internet connection NETGEAR recommends that you change this password to a more secure password The ideal password should contain no dictionary words from any language and should be a mixture of both upper and lower case letters numbers and symbols Your password can be up to 30 characters How to Change the Built In Password 1 Log into the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever Password and LAN address you have chosen for the router http 192 168 0 1 Figure 4 1 Log in to the router Protecting Your Network 4 1 Reference Manual for the Model DG834 ADSL Firewall Router 2 From the Main Menu of the browser interface under the Maintenance heading select Set Password to bring up the menu shown in Figure 4 2 Set Password Old Password Set Password Repeat New Password Administrator login times out after idle for 95 minutes Figure 4 2 Set Password menu 3 To change the password first enter the old password and then enter the new password twice 4 Click Apply to save your changes Note After changing the password you will be required to log in again to continue the configuration If you have backed up the router settings previously you should do a new backup so that the saved settings file includes the new password Changing the Administrator Login Timeout For security the administra
81. ing packet is intercepted at the network layer and then analyzed for state related information associated with all network connections A central cache within the firewall keeps track of the state information associated with all network connections All traffic passing through the firewall is analyzed against the state of these connections in order to determine whether or not it will be allowed to pass through or rejected Denial of Service Attack A hacker may be able to prevent your network from operating or communicating by launching a Denial of Service DoS attack The method used for such an attack can be as simple as merely flooding your site with more requests than it can handle A more sophisticated attack may attempt to exploit some weakness in the operating system used by your router or gateway Some operating systems can be disrupted by simply sending a packet with incorrect length information Ethernet Cabling Although Ethernet networks originally used thick or thin coaxial cable most installations currently use unshielded twisted pair UTP cabling The UTP cable contains eight conductors arranged in four twisted pairs and terminated with an RJ45 type connector A normal straight through UTP Ethernet cable follows the EI A568B standard wiring as described below in Table B 1 Network and Routing Basics B 11 Reference Manual for the Model DG834 ADSL Firewall Router Table B 1 UTP Ethernet cable wiri
82. ion Negotiation ON or OFF Authentication ON or OFF IP Address The IP Address assigned to the WAN port by the ADSL Internet Service Provider Network Mask Then Network Mask assigned to the WAN port by the ADSL Internet Service Provider 5 8 Managing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Viewing Attached Devices The Attached Devices menu contains a table of all IP devices that the router has discovered on the local network From the Main Menu of the browser interface under the Maintenance heading select Attached Devices to view the table shown in Figure 5 7 Attached Devices DHCP Addresses IP Address Device Name MAC Address 192 168 0 2 PSERVER 00 c0 02 34 45 16 192 168 0 3 ALSALLETTE KP2 00 d0 59 e1 f8 5d 3 192 168 0 4 BLACKDELL 00 09 5b 0f db 13 192 168 0 5 OLD 00 c0 4f 29 bf c8 192 168 0 6 ALSALLETTE XP2 00 d0 59 d8 10 20 Figure 5 7 Attached Devices menu For each device the table shows the IP address Device Name if available and the Ethernet MAC address Note that if the router is rebooted the table data is lost until the router rediscovers the devices To force the router to look for attached devices click the Refresh button Viewing Selecting and Saving Logged Information The router will log security related events such as denied incoming service requests hacker probes and administrator logins If you enabled content filtering in the Block Sites m
83. ions set up on the PC located to the right of the window Details Other Places e Right click on the Connection you will use and choose Status C 8 Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Local Area Connection Status General Support e Now you should be at the Local Area ee Network Connection Status window This Status Connected box displays the connection status duration Duration 0ga speed and activity statistics Paes ee e Administrator logon access rights are needed Fi Activity to use this window Sent Received e Click the Properties button to view details Packets 138 143 about the connection 243 057 4 Local Area Connection Properties F Genemi e The TCP IP details are presented on the enere Authentioations Advanced Support tab page Connect using N E Intel R PR07100 VE Network Connection e Select Internet Protocol and click Properties to view the configuration l i e infi tion This connection uses the following items penne v 8 File and Printer Sharing for Microsoft Networks dE QoS Packet Scheduler 3 Intemet Protocol TCP IP Install Uninstall Properties Description Allows your computer to access resources on a Microsoft network Show icon in notification area when connected OK Cancel Preparing Your Network C 9
84. ith the service provider The state of this connection is indicated with the WAN LED WAN LED Green or Blinking Green If your WAN LED is green or blinking green then you have a good ADSL connection You can be confident that the service provider has connected your line correctly and that your wiring is correct WAN LED Blinking Yellow If your WAN LED is blinking yellow then your router is attempting to make an ADSL connection with the service provider The LED should turn green within several minutes If the WAN LED does not turn green disconnect all telephones on the line If this solves the problem reconnect the telephones one at a time being careful to use a microfilter on each telephone If the microfilters are connected correctly you should be able to connect all your telephones If disconnecting telephones does not result in a green WAN LED there may be a problem with your wiring If the telephone company has tested the ADSL signal at your Network Interface Device NID then you may have poor quality wiring in your house WAN LED Off If the WAN LED is off disconnect all telephones on the line If this solves the problem reconnect the telephones one at a time being careful to use a microfilter on each telephone If the microfilters are connected correctly you should be able to connect all your telephones 7 4 Troubleshooting Reference Manual for the Model DG834 ADSL Firewall Router If disconnecting telephones d
85. k These parameters apply to the Local ADSL port of the router This field displays the Ethernet MAC address being used by the Local LAN port of the router This field displays the IP address being used by the Local LAN port of the router The default is 192 168 0 1 If OFF the router will not assign IP addresses to PCs on the LAN If ON the router will assign IP addresses to PCs on the LAN This field displays the IP Subnet Mask being used by the Local LAN port of the router The default is 255 255 255 0 Modem ADSL Firmware Version Modem Status Downstream Speed Upstream Speed These parameters apply to the Local WAN port of the router The version of the firmware The connection status of the modem The speed at which the modem is receiving data from the ADSL line The speed at which the modem is transmitting data to the ADSL line VPI The Virtual Path Identifier setting VCI The Virtual Channel Identifier setting Managing Your Network 5 5 Reference Manual for the Model DG834 ADSL Firewall Router Click the Show Statistics button to display router usage statistics as shown in Figure 5 3 below System Up Time 22 51 11 Port Status TxPkts RxPkts Collisions Tx B s Rx Bis Up Time WAN ADSL 105159 179491 0 0 0 22 51 11 LAN 10MMOOM 236651 249474 0 12 12 22 51 11 Poll Interval secs Set Interval Figure 5 4 Router Statistics screen This screen shows the f
86. lugged into the port should have a normal connection e g connecting to a PC or an uplink connection e g connecting to a router switch or hub That port will then configure itself to the correct configuration This feature also eliminates the need to worry about crossover cables as Auto Uplink will accommodate either type of cable to make the right connection Network and Routing Basics B 15 Reference Manual for the Model DG834 ADSL Firewall Router B 16 Network and Routing Basics Appendix C Preparing Your Network This appendix describes how to prepare your network to connect to the Internet through the DG834 ADSL Firewall Router and how to verify the readiness of broadband Internet service from an Internet service provider ISP Note If an ISP technician configured your computer during the installation of a broadband modem or if you configured it using instructions provided by your ISP you may need to copy the current configuration information for use in the configuration of your router Write down this information before reconfiguring your computers Refer to Obtaining ISP Configuration Information for Windows Computers on page C 19 or Obtaining ISP Configuration Information for Macintosh Computers on page C 20 for further information Preparing Your Computers for TCP IP Networking Computers access the Internet using a protocol called TCP IP Transmission Control Protocol Internet Pr
87. m a DHCP server Specify an IP address Adapter e Click OK This completes the configuration of TCP IP in Windows NT Restart the PC Repeat these steps for each PC with this version of Windows on your network Verifying TCP IP Properties for Windows XP 2000 and NT4 To check your PC s TCP IP configuration 1 On the Windows taskbar click the Start button and then click Run The Run window opens 2 Type cma and then click OK A command window opens 3 Type ipconfig all Your IP Configuration information will be listed and should match the values below if you are using the default TCP IP settings that NETGEAR recommends for connecting through a router or gateway e The IP address is between 192 168 0 2 and 192 168 0 254 e The subnet mask is 255 255 255 0 Preparing Your Network C 15 Reference Manual for the Model DG834 ADSL Firewall Router e The default gateway is 192 168 0 1 4 Type exit Configuring the Macintosh for TCP IP Networking Beginning with Macintosh Operating System 7 TCP IP is already installed on the Macintosh On each networked Macintosh you need to configure TCP IP to use DHCP MacOS 8 6 or 9 x 1 From the Apple menu select Control Panels then TCP IP The TCP IP Control Panel opens o TCP IP Connect via Ethernet Setup Configure Using DHCP Server DHCP Client ID IP Address lt will b
88. matically determine your connection 4 Click Next The Setup Wizard will now check for the following connection types e Dynamic IP assignment e A login protocol such as PPPoE or PPPoA e Classical IP over ATM RFC1577 e Fixed IP address assignment Next the Setup Wizard will report which connection type it has discovered and then display the appropriate configuration page If the Setup Wizard finds no connection you will be prompted to check the physical connection between your router and the ADSL line When the connection is properly made the router s Internet LED should be on 5 The ADSL settings for the multiplexing method and VPI VCI will update with the preset defaults The multiplexing method preset default settings will usually work Only change the multiplexing method if you are sure your ISP requires Virtual Path Identifier VPI or Virtual Channel Identifier VCI settings that are different from the default values Incorrect VPI or VCI settings will prevent you from connecting to the Internet To change these settings click the ADSL Settings link on the main menu See ADSL Settings on page 3 19 for more details The procedures for filling in the configuration page for each type of connection follow below 3 10 Connecting the Router to the Internet Reference Manual for the Model DG834 ADSL Firewall Router Wizard Detected PPPoE Login Account Setup If the Setup Wizard determines that your Internet service
89. mer Support Refer to the Support Information Card that shipped with your DG834 ADSL Firewall Router World Wide Web NETGEAR maintains a World Wide Web home page that you can access at the universal resource locator URL http www netgear com A direct connection to the Internet and a Web browser such as Internet Explorer or Netscape are required Contents Chapter 1 About This Guide Audience Conventions SOODE ssc cedsssscrasviaierprentcesstyeassediae franedasady E Aaa ENE 1 1 Howto Use mis PEIN sensijaan iaou osa a a aasa aia a Aai 1 2 Pow DPn iS MANUA naonnana AE 1 3 Chapter 2 Introduction ADONNE ROUIET sisi csereeiacetantetaicaciortedsnadeame ean aE E AE ERAGE 2 1 ey PRINCE a A 2 2 A Foweriul True Firewall s iicccicissaicccas se aud daedivaiaauinctiasgaaanbid aladuaisduieimaaeiediaassinlasead 2 2 Conten FISO eee emer ee eee peers t terre reer err acre 2 2 Auto Sensing and Auto Uplink LAN Ethernet Connections ccceceeeeeeeeeeees 2 3 PSU OIE runana n nR R A R RONS 2 3 Easy Installation eric ManageMent sssiirssnsriissi a 2 4 Meu Ub O ED a a a S E S 2 5 The Roulers Front Panel sccecsan secccesteressviotineddenidasdiecan ver bee eicadeboneetendesiorduaenentiersonieet 2 6 The Roulbr s Rear Panel sanusarietohignainaner iran aanne Ae 2 7 Chapter 3 Connecting the Router to the Internet What You Need Before You Begin ri seccisari Soccs ent eanciamn seat inti ce iiimnieemiautvessouiientionis 3 1 ADSL Microfilter Reguireme
90. ms listed go to the section indicated e Is the router on e Have I connected the router correctly Go to Basic Functioning on page 7 1 e Ican t access the router s configuration with my browser Go to Troubleshooting the Web Configuration Interface on page 7 3 e ve configured the router but I can t access the Internet Go to Troubleshooting the ISP Connection on page 7 4 e can t remember the router s configuration password e want to clear the configuration and start over again Go to Restoring the Default Configuration and Password on page 7 9 Basic Functioning After you turn on power to the router the following sequence of events should occur 1 When power is first applied verify that the Power LED is on see The Router s Front Panel on page 2 6 for an illustration and explanation of the LEDs 2 Verify that the Test LED lights within a few seconds indicating that the self test procedure is running 3 After approximately 10 seconds verify that a The Test LED is not lit b The LAN port LEDs are lit for any local ports that are connected c The WAN port LED is lit Troubleshooting 7 1 Reference Manual for the Model DG834 ADSL Firewall Router If a port s LED is lit a link has been established to the connected device If a LAN port is connected to a 100 Mbps device verify that the port s LED is green If the port is 10 Mbps the LED will be amber If any o
91. n install configure and operate the DG834 within minutes after connecting it to the network The following features simplify installation and management tasks Browser based management Browser based configuration allows you to easily configure your router from almost any type of personal computer such as Windows Macintosh or Linux A user friendly Setup Wizard is provided and online help documentation is built into the browser based Web Management Interface Smart Wizard The router automatically senses the type of Internet connection asking you only for the information required for your type of ISP account Remote management The router allows you to login to the Web management interface from a remote location via the Internet For security you can limit remote management access to a specified remote IP address or range of addresses and you can choose a nonstandard port number 2 4 Introduction Reference Manual for the Model DG834 ADSL Firewall Router Diagnostic functions The router incorporates built in diagnostic functions such as Ping DNS lookup and remote reboot These functions allow you to test Internet connectivity and reboot the router You can use these diagnostic functions directly from the DG834 when your are connect on the LAN or when you are connected over the Internet via the remote management function Visual monitoring The router s front panel LEDs provide an easy way to monitor its status and activity
92. n the Internet select Only this Computer Enter the IP address that will be allowed access Specify the Port Number that will be used for accessing the management interface Web browser access normally uses the standard HTTP service port 80 For greater security you can change the remote management Web interface to a custom port by entering that number in the box provided Choose a number between 1024 and 65535 but do not use the number of any common service port The default is 8080 which is a common alternate for HTTP Click Apply to have your changes take effect When accessing your router from the Internet you will type your router s WAN IP address in your browser s Address in IE or Location in Netscape box followed by a colon and the custom port number For example if your external address is 134 177 0 123 and you use port number 8080 enter in your browser http 134 177 0 123 8080 Note In this case the http must be included in the address Managing Your Network 5 15 Reference Manual for the Model DG834 ADSL Firewall Router 5 16 Managing Your Network Chapter 6 Advanced Configuration This chapter describes how to configure the advanced features of your DG834 ADSL Firewall Router Configuring Advanced Security The DG834 ADSL Firewall Router provides a variety of advanced features such as e Setting up a Demilitarized Zone DMZ Server e Connecting Automatically as Required e Disabli
93. nd perform other startup tasks Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router e By default the IP Address tab is open on this window e Verify the following Obtain an IP address automatically is selected If not selected click in the radio button to the left of it to select it This setting is required to enable the DHCP server to automatically assign an IP address e Click OK to continue Restart the PC Repeat these steps for each PC with this version of Windows on your network TCP IP Properties Bindings Advanced Netpios DNS Configuration Gateway WINS Configuration IP Address An IP address can be automatically assigned to this computer If your network does not automatically assign IP addresses ask your network administrator for an address and then type itin the space below Cancel Selecting the Windows Internet Access Method 1 On the Windows taskbar click the Start button point to Settings and then click Control Panel 2 Double click the Internet Options icon 3 Select I want to set up my Internet connection manually or I want to connect through a Local Area Network and click Next 4 Select I want to connect through a Local Area Network and click Next 5 Uncheck all boxes in the LAN Internet Configuration screen and click Next 6 Proceed to the end of the Wizard Verifying TCP IP
94. neering Task Force IETF publishes RFCs on its Web site at www ietf org Single IP Address Operation Using NAT In the past if multiple PCs on a LAN needed to access the Internet simultaneously you had to obtain a range of IP addresses from the ISP This type of Internet account is more costly than a single address account typically used by a single user with a modem rather than a router The DG834 ADSL router employs an address sharing method called Network Address Translation NAT This method allows several networked PCs to share an Internet account using only a single IP address which may be statically or dynamically assigned by your ISP Network and Routing Basics B 7 Reference Manual for the Model DG834 ADSL Firewall Router The router accomplishes this address sharing by translating the internal LAN IP addresses to a single address that is globally unique on the Internet The internal LAN IP addresses can be either private addresses or registered addresses For more information about IP address translation refer to RFC 1631 The IP Network Address Translator NAT The following figure illustrates a single IP address operation Private IP addresses assigned by user IP addresses assigned by ISP 192 168 0 2 T a Figure 7 3 Single IP Address Operation Using NAT This scheme offers the additional benefit of firewall like protection because the internal LAN addresses are not available t
95. ng straight through Pin Wire color Signal 1 Orange White Transmit Tx 2 Orange Transmit Tx 3 Green White Receive Rx 4 Blue 5 Blue White 6 Green Receive Rx 7 Brown White 8 Brown Category 5 Cable Quality Category 5 distributed cable that meets ANSI EIA TIA 568 A building wiring standards can be a maximum of 328 feet ft or 100 meters m in length divided as follows 20 ft 6 m between the hub and the patch panel if used 295 ft 90 m from the wiring closet to the wall outlet 10 ft 3 m from the wall outlet to the desktop device The patch panel and other connecting hardware must meet the requirements for 100 Mbps operation Category 5 Only 0 5 inch 1 5 cm of untwist in the wire pair is allowed at any termination point A twisted pair Ethernet network operating at 10 Mbits second 1OBASE T will often tolerate low quality cables but at 100 Mbits second LOBASE Tx the cable must be rated as Category 5 or Cat 5 by the Electronic Industry Association EIA This rating will be printed on the cable jacket A Category 5 cable will meet specified requirements regarding loss and crosstalk In addition there are restrictions on maximum cable length for both 10 and 100 Mbits second networks B 12 Network and Routing Basics Reference Manual for the Model DG834 ADSL Firewall Router Inside Twisted Pair Cables For two devices to communicate the transmitter of each device must be connected
96. ng Port Scan and DOS Protection e Responding to a Ping on the Internet WAN Port e MTU Size e The flexibility of configuring your LAN TCP IP settings e Using the Router as a DHCP Server e Configuring Dynamic DNS e Configuring Static Routes These features are discussed below Setting Up A Default DMZ Server The Default DMZ Server feature is helpful when using some online games and videoconferencing applications that are incompatible with NAT The router is programmed to recognize some of these applications and to work properly with them but there are other applications that may not function well In some cases one local computer can run the application properly if that computer s IP address is entered as the Default DMZ Server Advanced Configuration 6 1 Reference Manual for the Model DG834 ADSL Firewall Router Note For security reasons you should avoid using the Default DMZ Server feature When a computer is designated as the Default DMZ Server it loses much of the protection of the firewall and is exposed to many exploits from the Internet If compromised the computer can be used to attack your network Incoming traffic from the Internet is normally discarded by the router unless the traffic is a response to one of your local computers or a service that you have configured in the Ports menu Instead of discarding this traffic you can have it forwarded to one computer on your network This computer
97. ng temperature Operating humidity Electromagnetic Emissions Meets requirements of Interface Specifications TCP IP RIP 1 RIP 2 DHCP PPP over Ethernet PPPoE or PPP over ATM PPPoA RFC 1483 Bridged or Routed Ethernet and RFC 1577 Classical IP over ATM 120V 60 Hz input 240V 50 Hz input 230V 50 Hz input 100V 50 60 Hz input 12 VDC 1 0A output 12W maximum 6 9 x 1 1 x 4 7 175mm x 28mm x 119mm 0 7 lbs 0 3 kg 0 to 40 C 32 to 104 F 90 maximum relative humidity noncondensing FCC Part 15 Class B VCCI Class B EN 55 022 CISPR 22 Class B Technical Specifications A 1 Reference Manual for the Model DG834 ADSL Firewall Router LAN 1OBASE T or 1OOBASE Tx RJ 45 WAN ADSL Dual RJ 11 pins 2 and 3 T1 413 GDMT GLite ITU Annex A or B A 2 Technical Specifications Appendix B Network and Routing Basics This chapter provides an overview of IP networks and routing Related Publications As you read this document you may be directed to various RFC documents for further information An RFC is a Request For Comment RFC published by the Internet Engineering Task Force IETF an open organization that defines the architecture and operation of the Internet The RFC documents outline and define the standard protocols and procedures for the Internet The documents are listed on the World Wide Web at www ietf org and are mirrored and indexed at many other sites worldwid
98. nge the login timeout enter a new value in minutes This determines how long the router keeps the Internet connection active after there is no Internet activity from the LAN Entering an Idle Timeout value of zero means never log out When a connection uses PPPoE the IP address is normally assigned automatically However the DG834 allows this address to be set manually 3 16 Connecting the Router to the Internet Reference Manual for the Model DG834 ADSL Firewall Router e Select Get Automatically from ISP if your ISP assigns your IP address e Select Use Static IP Address if your ISP gives you a statically assigned address The DNS server is used to look up site addresses based on their names e Select Get Automatically from ISP if your ISP uses DHCP to assign your DNS servers Your ISP will automatically assign this address e Select Use These DNS Servers if your ISP gave you one or two DNS addresses Type the primary and secondary addresses You should only disable NAT if you are sure you do not require it NAT automatically assigns private IP addresses 192 168 0 x to LAN connected devices When NAT is disabled only standard routing is performed by this router Classical routing lets you directly manage the IP addresses the DG834 uses Classical routing should selected only by experienced users Note Disabling NAT will reboot the router and reset all the DG834 configuration settings to the factory defa
99. nnections are secure at the router and at the hub or workstation 7 2 Troubleshooting Reference Manual for the Model DG834 ADSL Firewall Router Make sure that power is turned on to the connected hub or workstation Be sure you are using the correct cable When connecting the router s WAN ADSL port use the cable that was supplied with the DG834 Troubleshooting the Web Configuration Interface If you are unable to access the router s Web Configuration interface from a computer on your local network check the following If you are using an Ethernet connected computer check the Ethernet connection between the computer and the router as described in the previous section Make sure your computer s IP address is on the same subnet as the router If you are using the recommended addressing scheme your computer s address should be in the range of 192 168 0 2 to 192 168 0 254 Refer to Verifying TCP IP Properties on page C 6 or Verifying TCP IP Properties for Macintosh Computers on page C 17 to find your computer s IP address Follow the instructions in Appendix C to configure your computer Note If your computer s IP address is shown as 169 254 x x Recent versions of Windows and MacOS will generate and assign an IP address if the computer cannot reach a DHCP server These auto generated addresses are in the range of 169 254 x x If your IP address is in this range check the connection from the computer
100. nt to limit access completely for the selected days select All Day Otherwise to limit access during certain times for the selected days enter Start Blocking and End Blocking times Note Enter the values in 24 hour time format For example 10 30 am would be 10 hours and 30 minutes and 10 30 pm would be 22 hours and 30 minutes If you set the start time after the end time the schedule will be effective through midnight the next day 4 Click Apply to save your changes Protecting Your Network 4 15 Reference Manual for the Model DG834 ADSL Firewall Router 4 16 Protecting Your Network Chapter 5 Managing Your Network This chapter describes how to perform network management tasks with your DG834 ADSL Firewall Router Backing Up Restoring or Erasing Your Settings The configuration settings of the DG834 ADSL router are stored in a configuration file in the router This file can be backed up to your computer restored or reverted to factory default settings The procedures below explain how to do these tasks How to Back Up the Configuration to a File 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever User Name Password and LAN address you have chosen for the router 2 From the Maintenance heading of the Main Menu select the Backup Settings menu as seen in Figure 5 1 Backup Settings Save a Copy of
101. ntry for Local Area Connection Double click that entry Select Properties Verify that Client for Microsoft Networks and Internet Protocol TCP IP are present If not select Install and add them Select Internet Protocol TCP IP click Properties and verify that Obtain an IP address automatically is selected Click OK and close all Network and Dialup Connections windows Then restart your PC Preparing Your Network C 7 Reference Manual for the Model DG834 ADSL Firewall Router DHCP Configuration of TCP IP in Windows XP 2000 or NT4 You will find there are many similarities in the procedures for different Windows systems when using DHCP to configure TCP IP The following steps will walk you through the configuration process for each of these versions of Windows DHCP Configuration of TCP IP in Windows XP Locate your Network Neighborhood icon e Select Control Panel from the Windows XP new Start Menu e Select the Network Connections icon on the Control Panel This will take you to the next step HB Local Area Connec Network Tasks Disable fa Create a new connection Repair amp Disable this network device Bridge Connections Q Repair this connection 7 fai Rename this connection oe e Now the Network Connection window View status of this connection name displays Change settings of this Properties connection The Connections List that shows all the network connect
102. nual Specifications Product Version DG834 ADSL Firewall Router Manual Publication Date May 2004 Note Product updates are available on the NETGEAR Inc Web site at gt http www netgear com support main asp About This Guide 1 1 Reference Manual for the Model DG834 ADSL Firewall Router How to Use this Manual The HTML version of this manual includes these features ZILOLA Index Search Favorites E Chapter 1 Introduction Chapter 2 Basic Setup PDF of This Chapter HA Chapter 3 Configuration Understanding the Configuration Options QA Using Configuration Profiles Connectto an Access Point in Infrastru How to Configure an How to Configure an Infrastructure Mod Connecting to Another PC in Ad hoc Mode Infrastructure Mode Profile Enabling Wireless Security Features Appendix A Technical Specifications Appendix B Wireless Networking Basics Follow the instructions below to configure an Appendix C Preparing Your PCs for Network infrastructure mode profile for connecting to E Glossary an access point 1 Run the WG511 Configuration Utility a Make sure the WG511 software is installed and the WG511 is fully inserted in an available CardBus slot in your PC Figure 1 1 HTML version of this manual 1 Left pane Use the left pane to view the Contents Index Search and Favorites tabs To view the HTML version of the manual you must have a version 4 or later bro
103. o prepare the following before you can establish an Internet connection through your router 1 The router connected to an ADSL line and a computer properly connected to the router as explained below 2 Active Internet service such as that provided by an ADSL account 3 The Internet Service Provider ISP configuration information for your DSL account Note If you purchased the DG834 in a country where a microfilter is not included you must acquire one ADSL Microfilter Requirements ADSL technology uses the same wires as your telephone service However ADSL adds signals to the telephone lines which create noise in the telephone service You must use ADSL microfilters to filter out these signals before they reach your telephone ADSL Microfilter Phone f Figure 3 1 ADSL microfilter Connecting the Router to the Internet 3 1 Reference Manual for the Model DG834 ADSL Firewall Router Each device such as a telephone fax machine answering machine or caller ID display will require an ADSL microfilter Note Do not connect the DG834 to the ADSL line through a microfilter unless the microfilter is a combination microfilter splitter specifically designed for this purpose Doing so will prevent the built in ADSL modem in the DG834 from establishing a connection to the Internet If you have any doubts about this connect the DG834 directly to the ADSL line ADSL Microfilter with Built In Splitter DSL c
104. o the Internet through the translated connection All incoming inquiries are filtered out by the router This filtering can prevent intruders from probing your system However using port forwarding you can allow one PC for example a Web server on your local network to be accessible to outside users B 8 Network and Routing Basics Reference Manual for the Model DG834 ADSL Firewall Router MAC Addresses and Address Resolution Protocol An IP address alone cannot be used to deliver data from one LAN device to another To send data between LAN devices you must convert the IP address of the destination device to its media access control MAC address Each device on an Ethernet network has a unique MAC address which is a 48 bit number assigned to each device by the manufacturer The technique that associates the IP address with a MAC address is known as address resolution Internet Protocol uses the Address Resolution Protocol ARP to resolve MAC addresses If a device sends data to another station on the network and the destination MAC address is not yet recorded ARP is used An ARP request is broadcast onto the network All stations on the network receive and read the request The destination IP address for the chosen station is included as part of the message so that only the station with this IP address responds to the ARP request All other stations discard the request Related Documents The station with the correct IP address res
105. o the page shown in Figure 3 13 below IP Over ATM Internet IP Address IP Address IP Subnet Mask wla wa li ila Domain Name Server DNS Address Primary DNS Oo JL J nll Secondary DNS Apply Cancel Test Figure 3 13 Setup Wizard menu for IP Over ATM Classical IP address 1 Enter your assigned IP Address and Subnet Mask This information should have been provided to you by your ISP You need the configuration parameters from your ISP you recorded in Record Your Internet Connection Information on page 3 3 2 Enter the IP address of your ISP s Primary DNS Server If a Secondary DNS Server address is available enter it also 3 12 Connecting the Router to the Internet Reference Manual for the Model DG834 ADSL Firewall Router DNS servers are required to perform the function of translating an Internet name such as www netgear com to a numeric IP address For a fixed IP address configuration you must obtain DNS server addresses from your ISP and enter them manually here 3 Click Apply to save the settings 4 Click the Test button to test your Internet connection If the NETGEAR Web site does not appear within one minute refer to Chapter 7 Troubleshooting Wizard Detected Fixed IP Static Account Setup If the router determines that your Internet service account uses Fixed IP assignment you will be directed to the page shown in Figure 3 14 below Fixed IP Account Name
106. oes not result in a green WAN LED the problem may be one of the following e Check that the telephone company has made the connection to your line and tested it e Verify that you are connected to the correct telephone line If you have more than one phone line be sure that you are connected to the line with the ADSL service It may be necessary to use a swapper if you ADSL signal is on pins 1 and 4 or the RJ 11 jack The DG834 ADSL router uses pins 2 and 3 Obtaining a WAN IP Address If your router is unable to access the internet and your WAN LED is green or blinking green you should determine whether the router is able to obtain a WAN IP address from the ISP Unless you have been assigned a static IP address your router must request an IP address from the ISP You can determine whether the request was successful using the browser interface To check the WAN IP address from the browser interface 1 Launch your browser and select an external site such as www netgear com 2 Access the Main Menu of the router s configuration at http 192 168 0 1 3 Under the Maintenance heading check that an IP address is shown for the WAN Port If 0 0 0 0 is shown your router has not obtained an IP address from your ISP If your router is unable to obtain an IP address from the ISP the problem may be one of the following e Your ISP may require a Multiplexing Method or Virtual Path Identifier Virtual Channel Identifier parameter Verify with yo
107. of Service DoS attacks such as Ping of Death SYN Flood LAND Attack and IP Spoofing e Blocks unwanted traffic from the Internet to your LAN e Blocks access from your LAN to Internet locations or services that you specify as off limits e Logs security incidents The DG834 will log security events such as blocked incoming traffic port scans attacks and administrator logins You can configure the router to email the log to you at specified intervals You can also configure the router to send immediate alert messages to your email address or email pager whenever a significant event occurs Content Filtering With its content filtering feature the DG834 prevents objectionable content from reaching your PCs The router allows you to control access to Internet content by screening for keywords within Web addresses You can configure the router to log and report attempts to access objectionable Internet sites 9 2 Introduction Reference Manual for the Model DG834 ADSL Firewall Router Auto Sensing and Auto Uplink LAN Ethernet Connections With its internal 4 port 10 100 switch the DG834 can connect to either a 10 Mbps standard Ethernet network or a 100 Mbps Fast Ethernet network The local LAN ports are autosensing and capable of full duplex or half duplex operation The router incorporates Auto Uplink technology Each local Ethernet port will automatically sense whether the Ethernet cable plugged into the port should have a
108. of the Security menu to display the Services menu shown in Figure 4 9 Services Service Table Service Type Ports Add Custom Service Edit Service J Delete Service Figure 4 9 Services menu e To create a new Service click the Add Custom Service button e To edit an existing Service select its button on the left side of the table and click Edit Service e To delete an existing Service select its button on the left side of the table and click Delete Service 3 Use the page shown below to define or edit a service Services Service Definition Name Type Start Port Finish Port Figure 4 10 Add Services menu Protecting Your Network 4 13 Reference Manual for the Model DG834 ADSL Firewall Router 4 Click Apply to save your changes Setting Times and Scheduling Firewall Services The DG834 ADSL router uses the Network Time Protocol NTP to obtain the current time and date from one of several Network Time Servers on the Internet How to Set Your Time Zone In order to localize the time for your log entries you must specify your Time Zone 1 Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever Password and LAN address you have chosen for the router 2 Select the Schedule link of the Security menu to display menu shown below Figure 4 11 Schedule Services menu 3
109. ollowing statistics Table 5 1 Router Statistics Fields Field Description WAN LAN or The statistics for the WAN Internet LAN local and Serial ports For each port the Serial Port screen displays Status The link status of the port TxPkts The number of packets transmitted on this port since reset or manual clear RxPkts The number of packets received on this port since reset or manual clear Collisions The number of collisions on this port since reset or manual clear Tx B s The current line utilization percentage of current bandwidth used on this port Rx B s The average line utilization for this port Up Time The time elapsed since the last power cycle or reset Poll Interval Specifies the interval at which the statistics are updated in this window Click Stop to freeze the display 5 6 Managing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Click the Connection Status button to display router connection status as shown in Figure 5 5 and Figure 5 6 Connection Status IP Address 192 168 2 54 Subnet Mask 255 255 255 0 Default Gateway 192 168 2 1 DHCP Server 192 168 2 54 DNS Server 866 125 125 214 Lease Obtained 2003 08 27 08 09 58 Lease Expires 2003 08 26 23 37 32 Release Renew Close Window Figure 5 5 Connection Status screen for Dynamic IP Clicking the Renew button updates the status information This sc
110. on Properties H 4 f 2 x General The Local Area Connection Properties l dialog box appears Connect using i a 3Com 10 100 Mini PCI Ethernet Adapter e Verify that you have the correct Ethernet card selected in the Connect using box Components checked are used by this connection V E Client for Microsoft Networks 8 File and Printer Sharing for Microsoft Networks Internet Protocol TCP IP e Verify that at least the following two items are displayed and selected in the box of Components checked are used by this connection e Client for Microsoft Networks and Install Uninstall Properties e Internet Protocol TCP IP Description A Transmission Control Protocol Internet Protocol The default e Click OK wide area network protocol that provides communication across diverse interconnected networks IV Show icon in taskbar when connected OK Cancel Preparing Your Network C 11 Reference Manual for the Model DG834 ADSL Firewall Router e With Internet Protocol TCP IP selected click on Properties to open the Internet Protocol TCP IP Properties dialogue box e Verify that e Obtain an IP address automatically is selected e Obtain DNS server address automatically is selected e Click OK to return to Local Area Connection Properties Internet Protocol TCP IP Properties General 2x You can get IP settings assign
111. ord e ISP Domain Name Server DNS Addresses e Fixed or Static IP Address Where Do Get the Internet Configuration Parameters There are several ways you can gather the required Internet connection information e Your ISP should have provided you with all the information needed to connect to the Internet If you cannot locate this information you can ask your ISP to provide it or you can try one of the options below e If you have a computer already connected using the active Internet access account you can gather the configuration information from that computer e For Windows 95 98 ME open the Network control panel select the TCP IP entry for the Ethernet adapter and click Properties e For Windows 2000 XP open the Local Area Network Connection select the TCP IP entry for the Ethernet adapter and click Properties e For Macintosh computers open the TCP IP or Network control panel e You can also refer to the DG amp 34 Resource CD for the NETGEAR Router ISP Guide which provides Internet connection information for many ISPs Once you locate your Internet configuration parameters you may want to record them on the page below according to the instructions in Record Your Internet Connection Information on page 3 3 Record Your Internet Connection Information Print the following page Fill in the configuration parameters from your Internet Service Provider ISP Connecting the Router to the Internet 3 3 Refer
112. otocol Each computer on your network must have TCP IP installed and selected as its networking protocol If a Network Interface Card NIC is already installed in your PC then TCP IP is probably already installed as well Most operating systems include the software components you need for networking with TCP IP e Windows 95 or later includes the software components for establishing a TCP IP network e Windows 3 1 does not include a TCP IP component You need to purchase a third party TCP IP application package such as NetManage Chameleon e Macintosh Operating System 7 or later includes the software components for establishing a TCP IP network e All versions of UNIX or Linux include TCP IP components Follow the instructions provided with your operating system or networking software to install TCP IP on your computer Preparing Your Network C 1 Reference Manual for the Model DG834 ADSL Firewall Router In your IP network each PC and the router must be assigned a unique IP addresses Each PC must also have certain other IP configuration information such as a subnet mask netmask a domain name server DNS address and a default gateway address In most cases you should install TCP IP so that the PC obtains its specific network configuration information automatically from a DHCP server during bootup For a detailed explanation of the meaning and purpose of these configuration items refer to Appendix B Network and Rou
113. ponds with its own MAC address directly to the sending device The receiving station provides the transmitting station with the required destination MAC address The IP address data and MAC address data for each station are held in an ARP table The next time data is sent the address can be obtained from the address information in the table For more information about address assignment refer to the IETF documents RFC 1597 Address Allocation for Private Internets and RFC 1466 Guidelines for Management of IP Address Space For more information about IP address translation refer to RFC 1631 The IP Network Address Translator NAT Domain Name Server Many of the resources on the Internet can be addressed by simple descriptive names such as www NETGEAR com This addressing is very helpful at the application level but the descriptive name must be translated to an IP address in order for a user to actually contact the resource Just as a telephone directory maps names to phone numbers or as an ARP table maps IP addresses to MAC addresses a domain name system DNS server maps descriptive names of network resources to IP addresses Network and Routing Basics B 9 Reference Manual for the Model DG834 ADSL Firewall Router When a PC accesses a resource by its descriptive name it first contacts a DNS server to obtain the IP address of the resource The PC sends the desired message using the IP address Many large organizations such as IS
114. r s Internet port is connected to the broadband modem the router appears to be a single PC to the ISP The router then allows the PCs on the local network to masquerade as the single PC to access the Internet through the broadband modem The method used by the router to accomplish this is called Network Address Translation NAT or IP masquerading Are Login Protocols Used Some ISPs require a special login protocol in which you must enter a login name and password in order to access the Internet If you normally log in to your Internet account by running a program such as WinPOET or EnterNet then your account uses PPP over Ethernet PPPoE When you configure your router you need to enter your login name and password in the router s configuration menus After your network and router are configured the router will perform the login task when needed and you will no longer need to run the login program from your PC It is not necessary to uninstall the login program What Is Your Configuration Information More and more ISPs are dynamically assigning configuration information However if your ISP does not dynamically assign configuration information but instead used fixed configurations your ISP should have given you the following basic information for your account C 18 Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router e An IP address and subnet mask e A gateway IP address which is the addr
115. r the IP address of the server where the Syslog file will be written Examples of Log Messages Following are examples of log messages In all cases the log entry shows the timestamp as Day Year Month Date Hour Minute Second Activation and Administration Tue 2002 05 21 18 48 39 NETGEAR activated This entry indicates a power up or reboot with initial time entry Tue 2002 05 21 18 55 00 Administrator login successful IP 192 168 0 2 Thu 2002 05 21 18 56 58 Administrator logout IP 192 168 0 2 This entry shows an administrator logging in and out from IP address 192 168 0 2 Tue 2002 05 21 19 00 06 Login screen timed out IP 192 168 0 2 This entry shows a time out of the administrator login Wed 2002 05 22 22 00 19 Log emailed This entry shows when the log was emailed Dropped Packets Wed 2002 05 22 07 15 15 TCP packet dropped Source 64 12 47 28 4787 WAN Destination 134 177 0 11 21 LAN Inbound Default rule match Sun 2002 05 22 12 50 33 UDP packet dropped Source 64 12 47 28 10714 WAN Destination 134 177 0 11 6970 LAN Inbound Default rule match Sun 2002 05 22 21 02 53 ICMP packet dropped Source 64 12 47 28 0 WAN Destination 134 177 0 11 0 LAN Inbound Default rule match These entries show an inbound FTP port 21 packet User Datagram Protocol UDP packet port 6970 and Internet Control Message Protocol ICMP packet port 0 being dropped as a
116. r weekly If the Weekly Daily or Hourly option is selected and the log fills up before the specified period the log is automatically e mailed to the specified e mail address After the log is sent it is cleared from the router s memory If the router cannot e mail the log file the log buffer may fill up In this case the router overwrites the log and discards its contents Managing Your Network 5 13 Reference Manual for the Model DG834 ADSL Firewall Router Running Diagnostic Utilities and Rebooting the Router The DG834 ADSL router has a diagnostics feature You can use the diagnostics menu to perform the following functions from the router e Ping an IP Address to test connectivity to see if you can reach a remote host e Perform a DNS Lookup to test if an Internet name resolves to an IP address to verify that the DNS server configuration is working e Display the Routing Table to identify what other routers the router is communicating with e Reboot the router to enable new network configurations to take effect or to clear problems with the router s network connection From the Main Menu of the browser interface under the Maintenance heading select the Router Diagnostics heading to display the menu shown in Figure 5 9 Diagnostics Ping an IP address IP Address i M Ping Perform a DNS Lookup Internet Name Lookup IP address DNS Server Display the Routing Table Display Reboot the Router
117. re the factory default configuration settings without knowing the login password or IP address you must use the Default Reset button on the rear panel of the router See DG834 Rear Panel on page 2 7 Upgrading the Router s Firmware The software of the DG834 ADSL router is stored in FLASH memory and can be upgraded as new software is released by NETGEAR Upgrade files can be downloaded from NETGEAR s Web site If the upgrade file is compressed ZIP file you must first extract the binary BIN or IMG file before uploading it to the router 5 2 Managing Your Network Reference Manual for the Model DG834 ADSL Firewall Router How to Upgrade the Router Firmware Note NETGEAR recommends that you back up your configuration before doing a firmware upgrade After the upgrade is complete you may need to restore your configuration settings 1 Download and unzip the new software file from NETGEAR The Web browser used to upload new firmware into the router must support HTTP uploads NETGEAR recommends using Microsoft Internet Explorer 5 0 or above or Netscape Navigator 4 7 or above Log in to the router at its default LAN address of http 192 168 0 1 with its default User Name of admin default password of password or using whatever User Name Password and LAN address you have chosen for the router From the Main Menu of the browser interface under the Maintenance heading select the Router Upgrade heading to displ
118. reen shows the following statistics Table 5 1 Connection Status Fields for Dynamic IP Field Description IP Address The IP Address assigned to the WAN port by the ADSL Internet Service Provider Subnet Mask Then Network Mask assigned to the WAN port by the ADSL Internet Service Provider Default Gateway Then default gateway router assigned to the WAN port by the ADSL Internet Service Provider DHCP Server The DHCP server s IP address DNS Server The DNS server s IP address Lease Obtained Date and time the lease was obtained Lease Expires Date and time the lease expires Managing Your Network 5 7 Reference Manual for the Model DG834 ADSL Firewall Router An alternate view of the Connection Status screen is shown in Figure 5 6 below Connection Status Connection Time 00 00 00 Negotiation Authentication Connecting to Server Connected ON ON Getting IP Addresses 192 168 10 13 Getting Network Mask 255 255 255 255 Connect Disconnect Close Window Figure 5 6 Connection Status screen for PPPoA Clicking the Renew button updates the status information This screen shows the following statistics Table 5 1 Connection Status Fields for PPPoA Field Description Connection Time Connection Method The time elapsed since the last connection to the Internet via the ADSL port The method the ADSL port acquired its TCP IP configurat
119. resses will not be routed on the Internet gt Using Static Routes Static Routes provide additional routing information to your router Under normal circumstances the router has adequate routing information after it has been configured for Internet access and you do not need to configure additional static routes You must configure static routes only for unusual cases such as multiple routers or multiple IP subnets located on your network Static Route Example As an example of when a static route is needed consider the following case e Your primary Internet access is through a cable modem to an ISP e You have an ISDN router on your home network for connecting to the company where you are employed This router s address on your LAN is 192 168 0 100 e Your company s network is 134 177 0 0 When you first configured your router two implicit static routes were created A default route was created with your ISP as the router and a second static route was created to your local network for all 192 168 0 x addresses With this configuration if you attempt to access a device on the 134 177 0 0 network your router will forward your request to the ISP The ISP forwards your request to the company where you are employed and the request will likely be denied by the company s firewall In this case you must define a static route telling your router that 134 177 0 0 should be accessed through the ISDN router at 192 16
120. ription OK Cancel You must have an Ethernet adapter the TCP IP protocol and Client for Microsoft Networks Note It is not necessary to remove any other network components shown in the Network window in order to install the adapter TCP IP or Client for Microsoft Networks gt If you need to install a new adapter follow these steps a Click the Add button b Select Adapter and then click Add c Select the manufacturer and model of your Ethernet adapter and then click OK If you need TCP IP a Click the Add button b Select Protocol and then click Add c Select Microsoft d Select TCP IP and then click OK Preparing Your Network C 3 Reference Manual for the Model DG834 ADSL Firewall Router If you need Client for Microsoft Networks a Click the Add button b Select Client and then click Add c Select Microsoft d Select Client for Microsoft Networks and then click OK 3 Restart your PC for the changes to take effect Enabling DHCP to Automatically Configure TCP IP Settings in Windows 95B 98 and Me After the TCP IP protocol components are installed each PC must be assigned specific information about itself and resources that are available on its network The simplest way to configure this information is to allow the PC to obtain the information from a DHCP server in the network You will find there are many similarities in the procedures for differ
121. router Select the filter that came with your router One Line Filter Splitter p gt Phone y H Two Line Filter pst With Splitter Phone 8 eh Figure 3 3 ADSL microfilters Note If you purchased the DG834 in a country where the filter is not included you must acquire one b Two Line Filter Example Insert the two line filter into the phone outlet and connect the phone to the phone line connector A Connecting the Router to the Internet 3 5 Reference Manual for the Model DG834 ADSL Firewall Router A Figure 3 4 Connecting an ADSL microfilter and phone Note To use a one line filter with a separate splitter insert the splitter into the phone outlet connect the one line filter to the splitter and connect the phone to the filter 2 CONNECT THE DG834 TO THE INTERNET Note Improperly connecting a filter to your DG834 ADSL router will block your ADSL connection a Turn off your computer b Connect the ADSL port of the DG834 to the ADSL port B of the two line filter pi Line m Phone L T amp ADSL Firewall Router DG834 i Figure 3 5 Connecting the DG834 ADSL router to an ADSL microfilter and phone 3 6 Connecting the Router to the Internet Reference Manual for the Model DG834 ADSL Firewall Router c Connect the Ethernet cable C from your DG834 s LAN port to the Ethernet adapter
122. s use the Reserved IP address feature in the LAN IP menu to keep the computer s IP address constant Local computers must access the local server using the computer s local LAN address 192 168 0 11 in the example in Figure 4 6 above Attempts by local computers to access the server using the external WAN IP address will fail Outbound Rules Service Blocking The DG834 allows you to block the use of certain Internet services by computers on your network This is called service blocking or port filtering You can define an outbound rule to block Internet access from a local computer based on IP address of the local computer source address IP address of the Internet site being contacted destination address Time of day Type of service being requested service port number Following is an application example of outbound rules Protecting Your Network 4 9 Reference Manual for the Model DG834 ADSL Firewall Router Outbound Rule Example Blocking Instant Messenger If you want to block Instant Messenger usage by employees during working hours you can create an outbound rule to block that application from any internal IP address to any external address according to the schedule that you have created in the Schedule menu You can also have the router log any attempt to use Instant Messenger during that blocked period Outbound Services Service AIM TCP 5190 bd Action BLOCK by schedule otherwise allow gt LAN users
123. s C addresses use 24 bits for the network address and eight bits for the node They are in this range T923 0 1 EO 223 250294 e Class D Class D addresses are used for multicasts messages sent to many hosts Class D addresses are in this range 224 0 0 0 to 239 255 255 255 e Class E Class E addresses are for experimental use Network and Routing Basics B 3 Reference Manual for the Model DG834 ADSL Firewall Router This addressing structure allows IP addresses to uniquely identify each physical network and each node on each physical network For each unique value of the network portion of the address the base address of the range host address of all zeros is known as the network address and is not usually assigned to a host Also the top address of the range host address of all ones is not assigned but is used as the broadcast address for simultaneously sending a packet to all hosts with the same network address Netmask In each of the address classes previously described the size of the two parts network address and host address is implied by the class This partitioning scheme can also be expressed by a netmask associated with the IP address A netmask is a 32 bit quantity that when logically combined using an AND operator with an IP address yields the network address For instance the netmasks for Class A B and C addresses are 255 0 0 0 255 255 0 0 and 255 255 255 0 respectively For example the addre
124. s On or Test LED Stays ON sccceccscscecccccssesesscctuctrasccesseetescteda ss LAN or WAN Port LEDs Not On nasses wisn Ee Troubleshooting the Web Configuration Interface ccccccccceeeceteeeeeeeeeeeeeeeeeeeeeeeeeee POS Troubleshooting the ISP Conneccion cc c cccsccesscsssascsanessccceecasessanssasancceasrencevecaarssnecensears 24 ADSL link PAET WAN LED Blinking Y Yelle WAN LED Off Obtaining a WAN IP Ad f Troubleshooting PPPoE or PPPOA P A P E E A E AE Troubleshooting Internet Browsing ssec EALE E ET A A Troubleshooting a TCP IP Network Using th the e Ping Utility aE EA AA A A A A AF d Testing the LAN Path to Your Router shes Testing the Path from Your Batia to a Remote Restoring the Default Configuration and Password sssseesesssseeerisisrererrisisrsrersss LQ Using the Reset button ai 9 Problems with Date and Time E E E E E E a E T Appendix A Technical Specifications Appendix B Network and Routing Basics Related Publications Ba Basic Router Conc site ds ee S NET 1S a Route ios crssirtsstianndssaiasneeaantnisiiis pinnae neni ed Routing Information Peni aa B2 IP Addresses and the unak B 2 viii Contents ne Uplink Switches ae Cables and MDI MDIX asinina UM Appendix C ii inlaid Your Network 2pari Our i Ladle cai ang l guri gM tworkin inataliina or Verifying t ehh a Ge isi C re DHCP to Automatically Configure TCP IP Se
125. ser interface under Advanced select Dynamic DNS to display the page below Dynamic DNS O usea Dynamic DNS Service Service Provider www DynDNS org Host Name User Name Password Use Wildcards Apply Cancel Show Status 3 Access the Web site of one of the dynamic DNS service providers whose names appear in the Service Provider box and register for an account For example for dyndns org go to www dyndns org 4 Select the Use a dynamic DNS service check box 5 Select the name of your dynamic DNS Service Provider 6 Type the Host Name that your dynamic DNS service provider gave you The dynamic DNS service provider may call this the domain name If your URL is myName dyndns org then your Host Name is myName 7 Type the User Name for your dynamic DNS account 8 Type the Password or key for your dynamic DNS account 9 If your dynamic DNS provider allows the use of wildcards in resolving your URL you can select the Use wildcards check box to activate this feature For example the wildcard feature will cause yourhost dyndns org to be aliased to the same IP address as yourhost dyndns org 10 Click Apply to save your configuration 6 8 Advanced Configuration Reference Manual for the Model DG834 ADSL Firewall Router Note If your ISP assigns a private WAN IP address such as 192 168 x x or 10 x x x the dynamic DNS service will not work because private add
126. smit and receive are from the perspective of the PC which is wired as Media Dependant Interface MDI In this wiring the PC transmits on pins 1 and 2 At the hub the perspective is reversed and the hub receives on pins 1 and 2 This wiring is referred to as Media Dependant Interface Crossover MDI X When connecting a PC to a PC or a hub port to another hub port the transmit pair must be exchanged with the receive pair This exchange is done by one of two mechanisms Most hubs provide an Uplink switch which will exchange the pairs on one port allowing that port to be connected to another hub using a normal Ethernet cable The second method is to use a crossover cable which is a special cable in which the transmit and receive pairs are exchanged at one of the two cable connectors Crossover cables are often unmarked as such and must be identified by comparing the two connectors Since the cable connectors are clear plastic it is easy to place them side by side and view the order of the wire colors on each On a straight through cable the color order will be the same on both connectors On a crossover cable the orange and blue pairs will be exchanged from one connector to the other B 14 Network and Routing Basics Reference Manual for the Model DG834 ADSL Firewall Router The DG834 ADSL router incorporates Auto Uplink technology also called MDI MDIX Each LOCAL Ethernet port will automatically sense whether the Ethernet cable p
127. ss 192 168 170 237 is a Class C IP address whose network portion is the upper 24 bits When combined using an AND operator with the Class C netmask as shown here only the network portion of the address remains 11000000 10101000 10101010 11101101 192 168 170 237 combined with 11111111 11111111 3211111111 00000000 255 255 255 0 Equals 11000000 10101000 10101010 00000000 192 168 170 0 As a shorter alternative to dotted decimal notation the netmask may also be expressed in terms of the number of ones from the left This number is appended to the IP address following a backward slash as n In the example the address could be written as 192 168 170 237 24 indicating that the netmask is 24 ones followed by 8 zeros Subnet Addressing By looking at the addressing structures you can see that even with a Class C address there are a large number of hosts per network Such a structure is an inefficient use of addresses if each end of a routed link requires a different network number It is unlikely that the smaller office LANs would have that many devices You can resolve this problem by using a technique known as subnet addressing B 4 Network and Routing Basics Reference Manual for the Model DG834 ADSL Firewall Router Subnet addressing allows us to split one IP network address into smaller multiple physical networks known as subnetworks Some of the node numbers are used as a subnet number instead A Class
128. t IP addressing scheme you can make those changes in this menu LAN IP Setup LAN TCPAP Setup IP Address 192 168 0 aa IP Subnet Mask 255 255 255 0 RIP Direction None RIP Version Disable Use Router as DHCP Server Starting IP Address 192 168 o 2 Ending IP Address 192 168 0 254 Address Reservation IP Address Device Name MAC Address Figure 6 2 LAN IP Setup Menu The LAN TCP IP Setup parameters are e IP Address This is the LAN IP address of the router e JP Subnet Mask This is the LAN Subnet Mask of the router Combined with the IP address the IP Subnet Mask allows a device to know which other addresses are local to it and which must be reached through a gateway or router e RIP Direction RIP Router Information Protocol allows a router to exchange routing information with other routers The RIP Direction selection controls how the Router sends and receives RIP packets Both is the default When set to Both or Out Only the router will broadcast its routing table periodically When set to Both or In Only it will incorporate the RIP information that it receives When set to None it will not send any RIP packets and will ignore any RIP packets received 6 4 Advanced Configuration Reference Manual for the Model DG834 ADSL Firewall Router e RIP Version This controls the format and the broadcasting method of the RIP packets that the router sends
129. the Use router as DHCP server check box Otherwise leave it selected Specify the pool of IP addresses to be assigned by setting the Starting IP Address and Ending IP Address These addresses should be part of the same IP address subnet as the router s LAN IP address Using the default addressing scheme you should define a range between 192 168 0 2 and 192 168 0 254 although you may want to save part of the range for devices with fixed addresses The router will deliver the following parameters to any LAN device that requests DHCP Advanced Configuration 6 5 Reference Manual for the Model DG834 ADSL Firewall Router e An IP Address from the range you have defined e Subnet Mask e Gateway IP Address is the router s LAN IP address e Primary DNS Server if you entered a Primary DNS address in the Basic Settings menu otherwise the router s LAN IP address e Secondary DNS Server if you entered a Secondary DNS address in the Basic Settings menu Reserved IP addresses When you specify a reserved IP address for a computer on the LAN that computer will always receive the same IP address each time it access the router s DHCP server Reserved IP addresses should be assigned to servers that require permanent IP settings To reserve an IP address 1 Click the Add button 2 Inthe IP Address box type the IP address to assign to the computer or server Choose an IP address from the router s LAN subnet such as 192 168
130. the host node or station on the network The dividing point may vary depending on the address range and the application There are five standard classes of IP addresses These address classes have different ways of determining the network and host sections of the address allowing for different numbers of hosts on a network Each address type begins with a unique bit pattern which is used by the TCP IP software to identify the address class After the address class has been determined the software can correctly identify the host section of the address The follow figure shows the three main address classes including network and host sections of the address for each address type B 2 Network and Routing Basics Reference Manual for the Model DG834 ADSL Firewall Router Class A _6h hULtC LSS Network Node Class B Network Node Class C Network Node Figure 7 1 Three Main Address Classes The five address classes are e Class A Class A addresses can have up to 16 777 214 hosts on a single network They use an eight bit network number and a 24 bit node number Class A addresses are in this range Toxxx to 126 6xKe XS e Class B Class B addresses can have up to 65 354 hosts on a network A Class B address uses a 16 bit network number and a 16 bit node number Class B addresses are in this range 128 13 x x to VIl 2 MeS e Class C Class C addresses can have 254 hosts on a network Clas
131. ting Basics The DG834 ADSL router is shipped preconfigured as a DHCP server The router assigns the following TCP IP configuration information automatically when the PCs are rebooted e PC or workstation IP addresses 192 168 0 2 through 192 168 0 254 e Subnet mask 255 255 255 0 e Gateway address the router 192 168 0 1 These addresses are part of the IETF designated private address range for use in private networks Configuring Windows 95 98 and Me for TCP IP Networking As part of the PC preparation process you need to manually install and configure TCP IP on each networked PC Before starting locate your Windows CD you may need to insert it during the TCP IP installation process Installing or Verifying Windows Networking Components To install or verify the necessary components for IP networking 1 On the Windows taskbar click the Start button point to Settings and then click Control Panel 2 Double click the Network icon The Network window opens which displays a list of installed components C 2 Preparing Your Network Reference Manual for the Model DG834 ADSL Firewall Router Network 27 x Configuration Identification Access Control The following network components are installed E Client for Microsoft Networks NETGEAR FA310TX Fast Ethernet PCI Adapter Remove Eropernies Primary Network Logon Client for Microsoft Networks pa Eile and Print Sharing Desc
132. to as peer to peer mode or an Independent Basic Service Set IBSS Ad hoc mode is useful for establishing a network where wireless infrastructure does not exist or where services are not required See Asymmetric Digital Subscriber Line A technology for sending data over regular telephone lines ADSL allows data rates up to 8 Mbps downstream and 640 Kbps upstream Glossary Reference Manual for the Model DG834 ADSL Firewall Router Cat 5 Denial of Service attack DHCP DMZ DNS Domain Name Domain Name Server DSLAM Dynamic Host Configuration Protocol Gateway IP Category 5 unshielded twisted pair UTP cabling An Ethernet network operating at 10 Mbits second 1OBASE T will often tolerate low quality cables but at 100 Mbits second 1OBASE Tx the cable must be rated as Category 5 or Cat 5 or Cat V by the Electronic Industry Association EIA This rating will be printed on the cable jacket Cat 5 cable contains eight conductors arranged in four twisted pairs and terminated with an RJ45 type connector In addition there are restrictions on maximum cable length for both 10 and 100 Mbits second networks DoS A hacker attack designed to prevent your computer or network from operating or communicating See Dynamic Host Configuration Protocol Specifying a Default DMZ Server allows you to set up a computer or server that is available to anyone on the Internet for services that you have not defined There
133. tor s login to the router configuration will timeout after a period of inactivity To change the login timeout period 1 Inthe Set Password menu type a number in Administrator login times out field The suggested default value is 5 minutes 2 Click Apply to save your changes or click Cancel to keep the current period Configuring Basic Firewall Services Basic firewall services you can configure include access blocking and scheduling of firewall security These topics are presented below 4 2 Protecting Your Network Reference Manual for the Model DG834 ADSL Firewall Router Blocking Keywords Sites and Services The router provides a variety of options for blocking Internet based content and communications services With its content filtering feature the DG834 ADSL router prevents objectionable content from reaching your PCs The router allows you to control access to Internet content by screening for keywords within Web addresses Key content filtering options include e Keyword blocking of HTTP traffic e Outbound Service Blocking limits access from your LAN to Internet locations or services that you specify as off limits e Denial of Service DoS protection Automatically detects and thwarts Denial of Service DoS attacks such as Ping of Death SYN Flood LAND Attack and IP Spoofing e Blocks unwanted traffic from the Internet to your LAN The section below explains how to configure your router to perform th
134. tream Connection Speed 1536 kbps UpStream Connection Speed 160 kbps VPI 0 CI 35 Show Statistics Connection Status Figure 5 3 Router Status screen The Router Status menu provides a limited amount of status and usage information 5 4 Managing Your Network Reference Manual for the Model DG834 ADSL Firewall Router This screen shows the following parameters Table 5 1 Menu 3 2 Router Status Fields Field Description Account Name The Host Name assigned to the router in the Basic Settings menu Firmware Version This field displays the router firmware version ADSL Port MAC Address IP Address DHCP IP Subnet Mask Domain Name Server DNS These parameters apply to the Internet ADSL port of the router This field displays the Ethernet MAC address being used by the Internet ADSL port of the router This field displays the IP address being used by the Internet ADSL port of the router If no address is shown the router cannot connect to the Internet If None the router will use a fixed IP address on the ADSL If Client the router will obtain an IP address dynamically from the ISP This field displays the IP Subnet Mask being used by the Internet ADSL port of the router This field displays the DNS Server IP addresses being used by the router These addresses are usually obtained dynamically from the ISP LAN Port MAC Address IP Address DHCP IP Subnet Mas
135. ttings in Windows 95B 98 me Me Contents ix Verifying the Readiness of Your Internet ACCOUNE 6 ceecesstenesetencssceesteesseensaansnnees C 18 Are Login Frorocols WIESE ac cassccsascaintcsuedeee Mcadanececontesaganceekiid desanea eatin eeeareiace C 18 What le Your Configuration Information scsscds cccctsnenocsastivesataveeds annainn C 18 Obtaining ISP Configuration Information for Windows Computers 0 0606 C 19 Obtaining ISP Configuration Information for Macintosh Computers 06 C 20 PRS PUNE TS NOWO sess tesa eornadonaontrxsameenertaeattneriaaeae bre asain Ea aaa RaaE DEES C 21 Glossary x Contents Chapter 1 About This Guide Thank you for purchasing the NETGEAR DG834 ADSL Firewall Router Audience Conventions Scope This reference manual assumes that the reader has basic to intermediate computer and Internet skills However basic computer network Internet firewall and networking technology tutorial information is provided in the Appendices This guide uses the following typographical conventions Table 1 Typographical conventions italics Emphasis books CDs URL names bold User input mono space Screen text file and server names extensions commands IP addresses Note This format is used to highlight information of importance or special interest This manual is written for the DG834 ADSL router according to these specifications Table 1 1 Ma
136. ult Disable NAT only if you plan to install the DG834 in a setting where you will be manually administering the IP address space on the LAN side of the router Internet Connection Requires Login and Uses PPPoA 1 If your Internet connection does require login select Yes and fill in the settings according to the instructions below Note You will no longer need to launch the ISP s login program on your computer in order to access the Internet When you start an Internet application your router automatically logs you in Choose PPPoA for the encapsulation method your ISP uses Enter the login name frequently the email address your ISP provided and password If you want to change the login timeout enter a new value in minutes This determines how long the router keeps the Internet connection active after there is no Internet activity from the LAN Entering an Idle Timeout value of zero means never log out When a connection uses PPPoA the IP address is normally assigned automatically However the DG834 allows this address to be set manually e Select Get Automatically from ISP if your ISP assigns your IP address e Select Use Static IP Address if your ISP gives you a statically assigned address The DNS server is used to look up site addresses based on their names Connecting the Router to the Internet 3 17 Reference Manual for the Model DG834 ADSL Firewall Router e Select Get Automatically from ISP
137. ur ISP the Multiplexing Method and parameter value and update the router s ADSL Settings accordingly e Your ISP may require a login program Ask your ISP whether they require PPP over Ethernet PPPoE or PPP over ATM PPPOA login e Ifyou have selected a login program you may have incorrectly set the Service Name User Name and Password See Troubleshooting PPPoE or PPPoA below e Your ISP may check for your computer s host name Assign the computer Host Name of your ISP account to the router in the browser based Setup Wizard Troubleshooting 7 5 Reference Manual for the Model DG834 ADSL Firewall Router e Your ISP only allows one Ethernet MAC address to connect to Internet and may check for your computer s MAC address In this case Inform your ISP that you have bought a new network device and ask them to use the router s MAC address OR Configure your router to spoof your computer s MAC address This can be done in the Basic Settings menu Refer to Manually Configuring Your Internet Connection on page 3 15 Troubleshooting PPPoE or PPPoA The PPPoA or PPPoA connection can be debugged as follows 1 Access the Main Menu of the router at http 192 168 0 1 2 Under the Maintenance heading select the Router Status link 3 Click the Connection Status button 4 If all of the steps indicate OK then your PPPoE or PPPoA connection is up and working 5 If any of the steps indicates Faile
138. uses Network Address Translation NAT your network presents only one IP address to the Internet and outside users cannot directly address any of your local computers However by defining an inbound rule you can make a local server for example a Web server or game server visible and available to the Internet The rule tells the router to direct inbound traffic for a particular service to one local server based on the destination port number This is also known as port forwarding Note Some residential broadband ISP accounts do not allow you to run any server gt processes such as a Web or FTP server from your location Your ISP may periodically check for servers and may suspend your account if it discovers any active services at your location If you are unsure refer to the Acceptable Use Policy of your ISP Remember that allowing inbound services opens holes in your firewall Only enable those ports that are necessary for your network Following are two application examples of inbound rules 4 6 Protecting Your Network Reference Manual for the Model DG834 ADSL Firewall Router Inbound Rule Example A Local Public Web Server If you host a public Web server on your local network you can define a rule to allow inbound Web HTTP requests from any outside IP address to the IP address of your Web server at any time of day This rule is shown in Figure 4 5 Inbound Services Service HTTP TCP 80 z Action ALLOW alw
139. wser with JavaScript enabled 2 Toolbar buttons Use the toolbar buttons across the top to navigate print pages and more The Show in Contents button locates the current topic in the Contents tab Previous Next buttons display the previous or next topic The PDF button links to a PDF version of the full manual The Print button prints the current topic Using this button when a step by step procedure is displayed will send the entire procedure to your printer you do not have to worry about specifying the correct range of pages 3 Right pane Use the right pane to view the contents of the manual Also each page of the manual includesa PDF of This Chapter link at the top right which links to a PDF file containing just the currently selected chapter of the manual 1 2 About This Guide Reference Manual for the Model DG834 ADSL Firewall Router How to Print this Manual To print this manual you man choose one of the following several options according to your needs e Printing a How To Sequence of Steps in the HTML View Use the Print button on the upper right of the toolbar to print the currently displayed topic Using this button when a step by step procedure is displayed will send the entire procedure to your printer you do not have to worry about specifying the correct range of pages e Printing a Chapter Use the PDF of This Chapter link at the top right of any page Click PDF of This Chapter
140. your ISP and enter them manually here 5 Click Apply to save the settings 6 Click the Test button to test your Internet connection If the NETGEAR Web site does not appear within one minute refer to Chapter 7 Troubleshooting Testing Your Internet Connection After completing the Internet connection configuration your can test your Internet connection Log in to the router then from the Basic Settings link in the Setup menu click the Test button If the NETGEAR Web site does not appear within one minute refer to Chapter 7 Troubleshooting Your router is now configured to provide Internet access for your network Your router automatically connects to the Internet when one of your computers requires access It is not necessary to run a dialer or login application such as Dial Up Networking or Enternet to connect log in or disconnect These functions are performed by the router as needed To access the Internet from any computer connected to your router launch a browser such as Microsoft Internet Explorer or Netscape Navigator You should see the router s Internet LED blink indicating communication to the ISP The browser should begin to display a Web page The following chapters describe how to configure the Advanced features of your router and how to troubleshoot problems that may occur 3 14 Connecting the Router to the Internet Reference Manual for the Model DG834 ADSL Firewall Router Manually Conf

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